428556612 has 24 divisors (see below), whose sum is σ = 1090871712. Its totient is φ = 129865600.

The previous prime is 428556551. The next prime is 428556637. The reversal of 428556612 is 216655824.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1623189 + ... + 1623452.

It is an arithmetic number, because the mean of its divisors is an integer number (45452988).

Almost surely, 2^428556612 is an apocalyptic number.

It is an amenable number.

428556612 is an abundant number, since it is smaller than the sum of its proper divisors (662315100).

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

428556612 is a wasteful number, since it uses less digits than its factorization.

428556612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246659 (or 3246657 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 428556612 is about 20701.6089229799. The cubic root of 428556612 is about 753.9387525387.

It can be divided in two parts, 428 and 556612, that added together give a triangular number (557040 = T₁₀₅₅).

The spelling of 428556612 in words is "four hundred twenty-eight million, five hundred fifty-six thousand, six hundred twelve".