628455396 has 24 divisors (see below), whose sum is σ = 1474593120. Its totient is φ = 208314112.

The previous prime is 628455383. The next prime is 628455403. The reversal of 628455396 is 693554826.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144141 + ... + 148436.

It is an arithmetic number, because the mean of its divisors is an integer number (61441380).

Almost surely, 2^628455396 is an apocalyptic number.

It is an amenable number.

628455396 is an abundant number, since it is smaller than the sum of its proper divisors (846137724).

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

628455396 is a wasteful number, since it uses less digits than its factorization.

628455396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292763 (or 292761 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 48.

The square root of 628455396 is about 25069.0126650413. The cubic root of 628455396 is about 856.5607169274.

The spelling of 628455396 in words is "six hundred twenty-eight million, four hundred fifty-five thousand, three hundred ninety-six".