2115756 has 18 divisors (see below), whose sum is σ = 5348252. Its totient is φ = 705240.

The previous prime is 2115749. The next prime is 2115761. The reversal of 2115756 is 6575112.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29350 + ... + 29421.

2^2115756 is an apocalyptic number.

It is an amenable number.

2115756 is an abundant number, since it is smaller than the sum of its proper divisors (3232496).

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

2115756 is a wasteful number, since it uses less digits than its factorization.

2115756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58781 (or 58776 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 2115756 is about 1454.5638521564. The cubic root of 2115756 is about 128.3773856001.

The spelling of 2115756 in words is "two million, one hundred fifteen thousand, seven hundred fifty-six".