628815632 has 20 divisors (see below), whose sum is σ = 1244253696. Its totient is φ = 307717920.

The previous prime is 628815631. The next prime is 628815673. The reversal of 628815632 is 236518826.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 628815632.

It is not an unprimeable number, because it can be changed into a prime (628815631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417344 + ... + 418847.

Almost surely, 2^628815632 is an apocalyptic number.

It is an amenable number.

628815632 is a deficient number, since it is larger than the sum of its proper divisors (615438064).

628815632 is a wasteful number, since it uses less digits than its factorization.

628815632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836246 (or 836240 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 628815632 is about 25076.1965218013. The cubic root of 628815632 is about 856.7243483058.

The spelling of 628815632 in words is "six hundred twenty-eight million, eight hundred fifteen thousand, six hundred thirty-two".