2016115720 has 32 divisors (see below), whose sum is σ = 4547608920. Its totient is φ = 804428800.

The previous prime is 2016115691. The next prime is 2016115747. The reversal of 2016115720 is 275116102.

It can be written as a sum of positive squares in 4 ways, for example, as 2013675876 + 2439844 = 44874^2 + 1562^2 .

It is a super-2 number, since 2×2016115720² = 8129445192862236800, which contains 22 as substring.

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, 46807 + ... + 78886.

Almost surely, 2^2016115720 is an apocalyptic number.

2016115720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2016115720 is an abundant number, since it is smaller than the sum of its proper divisors (2531493200).

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

2016115720 is a wasteful number, since it uses less digits than its factorization.

2016115720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126105 (or 126101 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 2016115720 is about 44901.1772674169. The cubic root of 2016115720 is about 1263.2960900057.

The spelling of 2016115720 in words is "two billion, sixteen million, one hundred fifteen thousand, seven hundred twenty".