628557012 has 36 divisors (see below), whose sum is σ = 1672478080. Its totient is φ = 198491472.

The previous prime is 628557011. The next prime is 628557047. The reversal of 628557012 is 210755826.

It is a happy number.

628557012 is a `hidden beast` number, since 6 + 2 + 85 + 570 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628557011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 458788 + ... + 460155.

Almost surely, 2^628557012 is an apocalyptic number.

It is an amenable number.

628557012 is an abundant number, since it is smaller than the sum of its proper divisors (1043921068).

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

628557012 is a wasteful number, since it uses less digits than its factorization.

628557012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918972 (or 918967 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 628557012 is about 25071.0393083334. The cubic root of 628557012 is about 856.6068806825.

The spelling of 628557012 in words is "six hundred twenty-eight million, five hundred fifty-seven thousand, twelve".