628154994 has 16 divisors (see below), whose sum is σ = 1290264768. Its totient is φ = 203725872.

The previous prime is 628154929. The next prime is 628155019. The reversal of 628154994 is 499451826.

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, 1414542 + ... + 1414985.

It is an arithmetic number, because the mean of its divisors is an integer number (80641548).

Almost surely, 2^628154994 is an apocalyptic number.

628154994 is an abundant number, since it is smaller than the sum of its proper divisors (662109774).

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

628154994 is a wasteful number, since it uses less digits than its factorization.

628154994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829569.

The product of its digits is 622080, while the sum is 48.

The square root of 628154994 is about 25063.0204484615. The cubic root of 628154994 is about 856.4242163561.

The spelling of 628154994 in words is "six hundred twenty-eight million, one hundred fifty-four thousand, nine hundred ninety-four".