68474728 has 32 divisors (see below), whose sum is σ = 149506560. Its totient is φ = 28791360.

The previous prime is 68474701. The next prime is 68474741. The reversal of 68474728 is 82747486.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8568 + ... + 14503.

It is an arithmetic number, because the mean of its divisors is an integer number (4672080).

Almost surely, 2^68474728 is an apocalyptic number.

It is an amenable number.

68474728 is an abundant number, since it is smaller than the sum of its proper divisors (81031832).

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

68474728 is a wasteful number, since it uses less digits than its factorization.

68474728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23137 (or 23133 counting only the distinct ones).

The product of its digits is 602112, while the sum is 46.

The square root of 68474728 is about 8274.9458004267. The cubic root of 68474728 is about 409.1131495099.

The spelling of 68474728 in words is "sixty-eight million, four hundred seventy-four thousand, seven hundred twenty-eight".