628639962 has 64 divisors (see below), whose sum is σ = 1339075584. Its totient is φ = 196479360.

The previous prime is 628639939. The next prime is 628639987. The reversal of 628639962 is 269936826.

It is a super-2 number, since 2×628639962² = 790376403646722888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 708283 + ... + 709169.

It is an arithmetic number, because the mean of its divisors is an integer number (20923056).

Almost surely, 2^628639962 is an apocalyptic number.

628639962 is an abundant number, since it is smaller than the sum of its proper divisors (710435622).

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

628639962 is a wasteful number, since it uses less digits than its factorization.

628639962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043.

The product of its digits is 1679616, while the sum is 51.

The square root of 628639962 is about 25072.6935529472. The cubic root of 628639962 is about 856.6445608579.

The spelling of 628639962 in words is "six hundred twenty-eight million, six hundred thirty-nine thousand, nine hundred sixty-two".