426660728 has 32 divisors (see below), whose sum is σ = 862490160. Its totient is φ = 196700160.

The previous prime is 426660701. The next prime is 426660739. The reversal of 426660728 is 827066624.

It is a congruent number.

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, 124883 + ... + 128253.

Almost surely, 2^426660728 is an apocalyptic number.

It is an amenable number.

426660728 is an abundant number, since it is smaller than the sum of its proper divisors (435829432).

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

426660728 is a wasteful number, since it uses less digits than its factorization.

426660728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4607 (or 4603 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 426660728 is about 20655.7674270408. The cubic root of 426660728 is about 752.8253302766.

The spelling of 426660728 in words is "four hundred twenty-six million, six hundred sixty thousand, seven hundred twenty-eight".