628531926 has 32 divisors (see below), whose sum is σ = 1376441856. Its totient is φ = 189756000.

The previous prime is 628531921. The next prime is 628531961. The reversal of 628531926 is 629135826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628531921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316 + ... + 35456.

It is an arithmetic number, because the mean of its divisors is an integer number (43013808).

Almost surely, 2^628531926 is an apocalyptic number.

628531926 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

628531926 is an abundant number, since it is smaller than the sum of its proper divisors (747909930).

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

628531926 is a wasteful number, since it uses less digits than its factorization.

628531926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35428.

The product of its digits is 155520, while the sum is 42.

The square root of 628531926 is about 25070.5390049755. The cubic root of 628531926 is about 856.5954846725.

The spelling of 628531926 in words is "six hundred twenty-eight million, five hundred thirty-one thousand, nine hundred twenty-six".