115640628 has 48 divisors (see below), whose sum is σ = 275815680. Its totient is φ = 37699200.

The previous prime is 115640627. The next prime is 115640641. The reversal of 115640628 is 826046511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115640621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174618 + ... + 175278.

It is an arithmetic number, because the mean of its divisors is an integer number (5746160).

Almost surely, 2^115640628 is an apocalyptic number.

It is an amenable number.

115640628 is an abundant number, since it is smaller than the sum of its proper divisors (160175052).

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

115640628 is a wasteful number, since it uses less digits than its factorization.

115640628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 115640628 is about 10753.6332464893. The cubic root of 115640628 is about 487.1957380836.

The spelling of 115640628 in words is "one hundred fifteen million, six hundred forty thousand, six hundred twenty-eight".