628407004446 has 40 divisors (see below), whose sum is σ = 1516412349144. Its totient is φ = 193356000720.

The previous prime is 628407004369. The next prime is 628407004447. The reversal of 628407004446 is 644400704826.

628407004446 is a `hidden beast` number, since 62 + 84 + 0 + 70 + 0 + 4 + 446 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628407004447) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 149192340 + ... + 149196551.

Almost surely, 2^628407004446 is an apocalyptic number.

628407004446 is an abundant number, since it is smaller than the sum of its proper divisors (888005344698).

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

628407004446 is a wasteful number, since it uses less digits than its factorization.

628407004446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298388918 (or 298388909 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 45.

The spelling of 628407004446 in words is "six hundred twenty-eight billion, four hundred seven million, four thousand, four hundred forty-six".