2972261856 has 24 divisors (see below), whose sum is σ = 7802187624. Its totient is φ = 990753920.

The previous prime is 2972261843. The next prime is 2972261857. The reversal of 2972261856 is 6581622792.

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 (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2972261857) 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, 15480435 + ... + 15480626.

It is an arithmetic number, because the mean of its divisors is an integer number (325091151).

Almost surely, 2^2972261856 is an apocalyptic number.

It is an amenable number.

2972261856 is an abundant number, since it is smaller than the sum of its proper divisors (4829925768).

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

2972261856 is a wasteful number, since it uses less digits than its factorization.

2972261856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30961074 (or 30961066 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 2972261856 is about 54518.4542700910. The cubic root of 2972261856 is about 1437.7907635751.

The spelling of 2972261856 in words is "two billion, nine hundred seventy-two million, two hundred sixty-one thousand, eight hundred fifty-six".