628968972 has 12 divisors (see below), whose sum is σ = 1467594296. Its totient is φ = 209656320.

The previous prime is 628968959. The next prime is 628968973. The reversal of 628968972 is 279869826.

628968972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-5 number, since 5×628968972⁵ (a number of 45 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (628968973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26207029 + ... + 26207052.

Almost surely, 2^628968972 is an apocalyptic number.

It is an amenable number.

628968972 is an abundant number, since it is smaller than the sum of its proper divisors (838625324).

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

628968972 is a wasteful number, since it uses less digits than its factorization.

628968972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52414088 (or 52414086 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 57.

The square root of 628968972 is about 25079.2538166509. The cubic root of 628968972 is about 856.7939815591.

The spelling of 628968972 in words is "six hundred twenty-eight million, nine hundred sixty-eight thousand, nine hundred seventy-two".