628091604 has 72 divisors (see below), whose sum is σ = 1894260480. Its totient is φ = 179453232.

The previous prime is 628091591. The next prime is 628091641. The reversal of 628091604 is 406190826.

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

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, 54052 + ... + 64635.

Almost surely, 2^628091604 is an apocalyptic number.

It is an amenable number.

628091604 is an abundant number, since it is smaller than the sum of its proper divisors (1266168876).

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

628091604 is a wasteful number, since it uses less digits than its factorization.

628091604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118714 (or 118699 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 628091604 is about 25061.7558044124. The cubic root of 628091604 is about 856.3954068224.

The spelling of 628091604 in words is "six hundred twenty-eight million, ninety-one thousand, six hundred four".