628604402 has 4 divisors (see below), whose sum is σ = 942906606. Its totient is φ = 314302200.

The previous prime is 628604399. The next prime is 628604429. The reversal of 628604402 is 204406826.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 587529121 + 41075281 = 24239^2 + 6409^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157151099 + ... + 157151102.

Almost surely, 2^628604402 is an apocalyptic number.

628604402 is a deficient number, since it is larger than the sum of its proper divisors (314302204).

628604402 is a wasteful number, since it uses less digits than its factorization.

628604402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314302203.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 628604402 is about 25071.9844049090. The cubic root of 628604402 is about 856.6284080747.

The spelling of 628604402 in words is "six hundred twenty-eight million, six hundred four thousand, four hundred two".