2156080 has 20 divisors (see below), whose sum is σ = 5013072. Its totient is φ = 862400.

The previous prime is 2156071. The next prime is 2156083. The reversal of 2156080 is 806512.

2156080 = 27² + 28² + ... + 186².

It is a happy number.

2156080 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (2156083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13396 + ... + 13555.

2^2156080 is an apocalyptic number.

2156080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156080 is an abundant number, since it is smaller than the sum of its proper divisors (2856992).

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

2156080 is a wasteful number, since it uses less digits than its factorization.

2156080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26964 (or 26958 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2156080 is about 1468.3596289738. The cubic root of 2156080 is about 129.1878360493.

The spelling of 2156080 in words is "two million, one hundred fifty-six thousand, eighty".