Search a number
-
+
207988480 = 2857139167
BaseRepresentation
bin11000110010110…
…10011100000000
3112111100220120001
430121122130000
5411221112410
632345525344
75103605260
oct1431323400
9474326501
10207988480
11a7449907
12597a3854
133412340b
141d8a17a0
15133d633a
hexc65a700

207988480 has 144 divisors (see below), whose sum is σ = 576898560. Its totient is φ = 70373376.

The previous prime is 207988453. The next prime is 207988541. The reversal of 207988480 is 84889702.

It is a self number, because there is not a number n which added to its sum of digits gives 207988480.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1245357 + ... + 1245523.

It is an arithmetic number, because the mean of its divisors is an integer number (4006240).

Almost surely, 2207988480 is an apocalyptic number.

207988480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207988480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288449280).

207988480 is an abundant number, since it is smaller than the sum of its proper divisors (368910080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

207988480 is a wasteful number, since it uses less digits than its factorization.

207988480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 207988480 is about 14421.8057121846. The cubic root of 207988480 is about 592.4882750325.

It can be divided in two parts, 20 and 7988480, that multiplied together give a square (159769600 = 126402).

The spelling of 207988480 in words is "two hundred seven million, nine hundred eighty-eight thousand, four hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 139 140 160 167 224 256 278 280 320 334 448 556 560 640 668 695 835 896 973 1112 1120 1169 1280 1336 1390 1670 1792 1946 2224 2240 2338 2672 2780 3340 3892 4448 4480 4676 4865 5344 5560 5845 6680 7784 8896 8960 9352 9730 10688 11120 11690 13360 15568 17792 18704 19460 21376 22240 23213 23380 26720 31136 35584 37408 38920 42752 44480 46426 46760 53440 62272 74816 77840 88960 92852 93520 106880 116065 124544 149632 155680 162491 177920 185704 187040 213760 232130 249088 299264 311360 324982 371408 374080 464260 622720 649964 742816 748160 812455 928520 1245440 1299928 1485632 1496320 1624910 1857040 2599856 2971264 3249820 3714080 5199712 5942528 6499640 7428160 10399424 12999280 14856320 20798848 25998560 29712640 41597696 51997120 103994240 207988480