628040934 has 48 divisors (see below), whose sum is σ = 1434513600. Its totient is φ = 198032688.

The previous prime is 628040909. The next prime is 628040957. The reversal of 628040934 is 439040826.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396957 + ... + 398535.

It is an arithmetic number, because the mean of its divisors is an integer number (29885700).

Almost surely, 2^628040934 is an apocalyptic number.

628040934 is an abundant number, since it is smaller than the sum of its proper divisors (806472666).

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

628040934 is a wasteful number, since it uses less digits than its factorization.

628040934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 628040934 is about 25060.7448811882. The cubic root of 628040934 is about 856.3723768896.

The spelling of 628040934 in words is "six hundred twenty-eight million, forty thousand, nine hundred thirty-four".