68904432 has 100 divisors (see below), whose sum is σ = 202253920. Its totient is φ = 22643712.

The previous prime is 68904427. The next prime is 68904457. The reversal of 68904432 is 23440986.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 102048 + ... + 102720.

Almost surely, 2^68904432 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 68904432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101126960).

68904432 is an abundant number, since it is smaller than the sum of its proper divisors (133349488).

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

68904432 is a wasteful number, since it uses less digits than its factorization.

68904432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 68904432 is about 8300.8693520619. The cubic root of 68904432 is about 409.9671439068.

The spelling of 68904432 in words is "sixty-eight million, nine hundred four thousand, four hundred thirty-two".