2956021220 has 24 divisors (see below), whose sum is σ = 6213086208. Its totient is φ = 1181372000.

The previous prime is 2956021207. The next prime is 2956021223. The reversal of 2956021220 is 221206592.

It is a super-2 number, since 2×2956021220² = 17476122906180576800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2956021223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41186 + ... + 87225.

It is an arithmetic number, because the mean of its divisors is an integer number (258878592).

Almost surely, 2^2956021220 is an apocalyptic number.

2956021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2956021220 is an abundant number, since it is smaller than the sum of its proper divisors (3257064988).

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

2956021220 is a wasteful number, since it uses less digits than its factorization.

2956021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129571 (or 129569 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2956021220 is about 54369.3040235021. The cubic root of 2956021220 is about 1435.1672513642.

The spelling of 2956021220 in words is "two billion, nine hundred fifty-six million, twenty-one thousand, two hundred twenty".