2156130 has 24 divisors (see below), whose sum is σ = 5606172. Its totient is φ = 574944.

The previous prime is 2156123. The next prime is 2156159. The reversal of 2156130 is 316512.

It can be written as a sum of positive squares in 2 ways, for example, as 2134521 + 21609 = 1461^2 + 147^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon 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, 11889 + ... + 12068.

2^2156130 is an apocalyptic number.

2156130 is an abundant number, since it is smaller than the sum of its proper divisors (3450042).

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

2156130 is a wasteful number, since it uses less digits than its factorization.

2156130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23970 (or 23967 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2156130 is about 1468.3766546769. The cubic root of 2156130 is about 129.1888346737.

The spelling of 2156130 in words is "two million, one hundred fifty-six thousand, one hundred thirty".