2115956 has 36 divisors (see below), whose sum is σ = 4170348. Its totient is φ = 935424.

The previous prime is 2115943. The next prime is 2115961. The reversal of 2115956 is 6595112.

It can be written as a sum of positive squares in 6 ways, for example, as 320356 + 1795600 = 566^2 + 1340^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 57170 + ... + 57206.

It is an arithmetic number, because the mean of its divisors is an integer number (115843).

2^2115956 is an apocalyptic number.

It is an amenable number.

2115956 is a deficient number, since it is larger than the sum of its proper divisors (2054392).

2115956 is a wasteful number, since it uses less digits than its factorization.

2115956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 85 counting only the distinct ones).

The product of its digits is 2700, while the sum is 29.

The square root of 2115956 is about 1454.6325996622. The cubic root of 2115956 is about 128.3814305952.

The spelling of 2115956 in words is "two million, one hundred fifteen thousand, nine hundred fifty-six".