Search a number
-
+
20062280 = 2357137523
BaseRepresentation
bin100110010001…
…0000001001000
31101202021021102
41030202001020
520113443110
61554000532
7332345420
oct114420110
941667242
1020062280
11103630a7
126876148
134205894
142943480
151b645a5
hex1322048

20062280 has 64 divisors (see below), whose sum is σ = 52064640. Its totient is φ = 6815232.

The previous prime is 20062277. The next prime is 20062303. The reversal of 20062280 is 8226002.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38099 + ... + 38621.

It is an arithmetic number, because the mean of its divisors is an integer number (813510).

Almost surely, 220062280 is an apocalyptic number.

20062280 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 20062280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26032320).

20062280 is an abundant number, since it is smaller than the sum of its proper divisors (32002360).

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

20062280 is a wasteful number, since it uses less digits than its factorization.

20062280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20062280 is about 4479.0936583197. The cubic root of 20062280 is about 271.7232262497.

Adding to 20062280 its reverse (8226002), we get a palindrome (28288282).

The spelling of 20062280 in words is "twenty million, sixty-two thousand, two hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 137 140 274 280 523 548 685 959 1046 1096 1370 1918 2092 2615 2740 3661 3836 4184 4795 5230 5480 7322 7672 9590 10460 14644 18305 19180 20920 29288 36610 38360 71651 73220 143302 146440 286604 358255 501557 573208 716510 1003114 1433020 2006228 2507785 2866040 4012456 5015570 10031140 20062280