2156436504 has 24 divisors (see below), whose sum is σ = 5840349060. Its totient is φ = 718812144.

The previous prime is 2156436497. The next prime is 2156436593. The reversal of 2156436504 is 4056346512.

2156436504 is a `hidden beast` number, since 2 + 1 + 5 + 643 + 6 + 5 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14975182 + ... + 14975325.

Almost surely, 2^2156436504 is an apocalyptic number.

2156436504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2156436504 is an abundant number, since it is smaller than the sum of its proper divisors (3683912556).

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

2156436504 is a wasteful number, since it uses less digits than its factorization.

2156436504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29950519 (or 29950512 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 2156436504 is about 46437.4472166591. The cubic root of 2156436504 is about 1291.9495598337.

The spelling of 2156436504 in words is "two billion, one hundred fifty-six million, four hundred thirty-six thousand, five hundred four".