Search a number
-
+
87200256 = 2931113397
BaseRepresentation
bin1010011001010…
…01001000000000
320002002020021010
411030221020000
5134310402011
612353000520
72106122103
oct514511000
9202066233
1087200256
1145249930
1225253140
13150b17b0
14b81c73a
1579c71a6
hex5329200

87200256 has 160 divisors (see below), whose sum is σ = 273607488. Its totient is φ = 24330240.

The previous prime is 87200251. The next prime is 87200261. The reversal of 87200256 is 65200278.

It is an interprime number because it is at equal distance from previous prime (87200251) and next prime (87200261).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87200251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219450 + ... + 219846.

Almost surely, 287200256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87200256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136803744).

87200256 is an abundant number, since it is smaller than the sum of its proper divisors (186407232).

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

87200256 is a wasteful number, since it uses less digits than its factorization.

87200256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 87200256 is about 9338.1077312269. The cubic root of 87200256 is about 443.4444801443. Note that the first 4 decimals are identical.

The spelling of 87200256 in words is "eighty-seven million, two hundred thousand, two hundred fifty-six".

Divisors: 1 2 3 4 6 8 11 12 13 16 22 24 26 32 33 39 44 48 52 64 66 78 88 96 104 128 132 143 156 176 192 208 256 264 286 312 352 384 397 416 429 512 528 572 624 704 768 794 832 858 1056 1144 1191 1248 1408 1536 1588 1664 1716 2112 2288 2382 2496 2816 3176 3328 3432 4224 4367 4576 4764 4992 5161 5632 6352 6656 6864 8448 8734 9152 9528 9984 10322 12704 13101 13728 15483 16896 17468 18304 19056 19968 20644 25408 26202 27456 30966 34936 36608 38112 41288 50816 52404 54912 56771 61932 69872 73216 76224 82576 101632 104808 109824 113542 123864 139744 152448 165152 170313 203264 209616 219648 227084 247728 279488 304896 330304 340626 419232 454168 495456 558976 609792 660608 681252 838464 908336 990912 1117952 1321216 1362504 1676928 1816672 1981824 2235904 2642432 2725008 3353856 3633344 3963648 5450016 6707712 7266688 7927296 10900032 14533376 21800064 29066752 43600128 87200256