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68972552 = 2311783779
BaseRepresentation
bin1000001110001…
…11000000001000
311210210011112222
410013013000020
5120124110202
610502153212
71465154105
oct407070010
9153704488
1068972552
1135a2a110
121b122808
131139bc7c
149235aac
1560c64a2
hex41c7008

68972552 has 16 divisors (see below), whose sum is σ = 141080400. Its totient is φ = 31351120.

The previous prime is 68972509. The next prime is 68972569. The reversal of 68972552 is 25527986.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391802 + ... + 391977.

It is an arithmetic number, because the mean of its divisors is an integer number (8817525).

Almost surely, 268972552 is an apocalyptic number.

It is an amenable number.

68972552 is an abundant number, since it is smaller than the sum of its proper divisors (72107848).

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

68972552 is a wasteful number, since it uses less digits than its factorization.

68972552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783796 (or 783792 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 68972552 is about 8304.9715231300. The cubic root of 68972552 is about 410.1021993891.

It can be divided in two parts, 6897 and 2552, that added together give a palindrome (9449).

The spelling of 68972552 in words is "sixty-eight million, nine hundred seventy-two thousand, five hundred fifty-two".

Divisors: 1 2 4 8 11 22 44 88 783779 1567558 3135116 6270232 8621569 17243138 34486276 68972552