68702928 has 80 divisors (see below), whose sum is σ = 205689216. Its totient is φ = 19353600.

The previous prime is 68702911. The next prime is 68702947. The reversal of 68702928 is 82920786.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 68702928.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23128 + ... + 25928.

Almost surely, 2^68702928 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 68702928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102844608).

68702928 is an abundant number, since it is smaller than the sum of its proper divisors (136986288).

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

68702928 is a wasteful number, since it uses less digits than its factorization.

68702928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892 (or 2886 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 68702928 is about 8288.7229414428. The cubic root of 68702928 is about 409.5671179760.

The spelling of 68702928 in words is "sixty-eight million, seven hundred two thousand, nine hundred twenty-eight".