2156264430 has 32 divisors (see below), whose sum is σ = 5203958400. Its totient is φ = 571790112.

The previous prime is 2156264423. The next prime is 2156264443. The reversal of 2156264430 is 344626512.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2156264391 and 2156264400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195400 + ... + 206139.

It is an arithmetic number, because the mean of its divisors is an integer number (162623700).

Almost surely, 2^2156264430 is an apocalyptic number.

2156264430 is an abundant number, since it is smaller than the sum of its proper divisors (3047693970).

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

2156264430 is a wasteful number, since it uses less digits than its factorization.

2156264430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401728.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 2156264430 is about 46435.5944292738. The cubic root of 2156264430 is about 1291.9151949851.

The spelling of 2156264430 in words is "two billion, one hundred fifty-six million, two hundred sixty-four thousand, four hundred thirty".