2156712 has 32 divisors (see below), whose sum is σ = 5470080. Its totient is φ = 708480.

The previous prime is 2156711. The next prime is 2156719. The reversal of 2156712 is 2176512.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (2156711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137 + ... + 2367.

It is an arithmetic number, because the mean of its divisors is an integer number (170940).

2^2156712 is an apocalyptic number.

It is an amenable number.

2156712 is an abundant number, since it is smaller than the sum of its proper divisors (3313368).

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

2156712 is a wasteful number, since it uses less digits than its factorization.

2156712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313 (or 1309 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 2156712 is about 1468.5748193402. The cubic root of 2156712 is about 129.2004575254.

The spelling of 2156712 in words is "two million, one hundred fifty-six thousand, seven hundred twelve".