Search a number
-
+
75956868 = 2232131091489
BaseRepresentation
bin1001000011100…
…00001010000100
312021221000020100
410201300022010
5123421104433
611312004100
71611423411
oct441601204
9167830210
1075956868
113996a579
1221530630
1312975cc0
14a133108
156a05b13
hex4870284

75956868 has 72 divisors (see below), whose sum is σ = 208808600. Its totient is φ = 23141376.

The previous prime is 75956849. The next prime is 75956873. The reversal of 75956868 is 86865957.

75956868 is a `hidden beast` number, since 75 + 9 + 568 + 6 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1617984 + 74338884 = 1272^2 + 8622^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50268 + ... + 51756.

Almost surely, 275956868 is an apocalyptic number.

75956868 is a gapful number since it is divisible by the number (78) 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 75956868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104404300).

75956868 is an abundant number, since it is smaller than the sum of its proper divisors (132851732).

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

75956868 is a wasteful number, since it uses less digits than its factorization.

75956868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621 (or 1616 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 75956868 is about 8715.3237461382. The cubic root of 75956868 is about 423.5022118834.

The spelling of 75956868 in words is "seventy-five million, nine hundred fifty-six thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 13 18 26 36 39 52 78 109 117 156 218 234 327 436 468 654 981 1308 1417 1489 1962 2834 2978 3924 4251 4467 5668 5956 8502 8934 12753 13401 17004 17868 19357 25506 26802 38714 51012 53604 58071 77428 116142 162301 174213 232284 324602 348426 486903 649204 696852 973806 1460709 1947612 2109913 2921418 4219826 5842836 6329739 8439652 12659478 18989217 25318956 37978434 75956868