2015964 has 36 divisors (see below), whose sum is σ = 5274360. Its totient is φ = 648480.

The previous prime is 2015947. The next prime is 2015977. The reversal of 2015964 is 4695102.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2015964² = 8128221698592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79 + ... + 2009.

It is an arithmetic number, because the mean of its divisors is an integer number (146510).

2^2015964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2015964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2637180).

2015964 is an abundant number, since it is smaller than the sum of its proper divisors (3258396).

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

2015964 is a wasteful number, since it uses less digits than its factorization.

2015964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970 (or 1965 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2015964 is about 1419.8464705735. The cubic root of 2015964 is about 126.3264400011.

The spelling of 2015964 in words is "two million, fifteen thousand, nine hundred sixty-four".