428539056 has 40 divisors (see below), whose sum is σ = 1207702464. Its totient is φ = 129860160.

The previous prime is 428539051. The next prime is 428539063. The reversal of 428539056 is 650935824.

It is a super-2 number, since 2×428539056² = 367291445034742272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 428538999 and 428539017.

It is not an unprimeable number, because it can be changed into a prime (428539051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405286 + ... + 406341.

Almost surely, 2^428539056 is an apocalyptic number.

It is an amenable number.

428539056 is an abundant number, since it is smaller than the sum of its proper divisors (779163408).

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

428539056 is a wasteful number, since it uses less digits than its factorization.

428539056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811649 (or 811643 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 428539056 is about 20701.1848936238. The cubic root of 428539056 is about 753.9284572599.

The spelling of 428539056 in words is "four hundred twenty-eight million, five hundred thirty-nine thousand, fifty-six".