2156412 has 24 divisors (see below), whose sum is σ = 5104512. Its totient is φ = 708400.

The previous prime is 2156393. The next prime is 2156417. The reversal of 2156412 is 2146512.

It is a super-2 number, since 2×2156412² = 9300225427488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156417) 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, 414 + ... + 2117.

It is an arithmetic number, because the mean of its divisors is an integer number (212688).

2^2156412 is an apocalyptic number.

It is an amenable number.

2156412 is an abundant number, since it is smaller than the sum of its proper divisors (2948100).

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

2156412 is a wasteful number, since it uses less digits than its factorization.

2156412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609 (or 2607 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 2156412 is about 1468.4726759460. The cubic root of 2156412 is about 129.1944666259.

The spelling of 2156412 in words is "two million, one hundred fifty-six thousand, four hundred twelve".