20115708 has 24 divisors (see below), whose sum is σ = 48978048. Its totient is φ = 6413616.

The previous prime is 20115659. The next prime is 20115713. The reversal of 20115708 is 80751102.

It is a congruent number.

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, 36166 + ... + 36717.

It is an arithmetic number, because the mean of its divisors is an integer number (2040752).

Almost surely, 2^20115708 is an apocalyptic number.

It is an amenable number.

20115708 is an abundant number, since it is smaller than the sum of its proper divisors (28862340).

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

20115708 is a wasteful number, since it uses less digits than its factorization.

20115708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72913 (or 72911 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 20115708 is about 4485.0538458306. The cubic root of 20115708 is about 271.9642217935.

The spelling of 20115708 in words is "twenty million, one hundred fifteen thousand, seven hundred eight".