2879920220 has 24 divisors (see below), whose sum is σ = 6055233408. Its totient is φ = 1150558400.

The previous prime is 2879920189. The next prime is 2879920223. The reversal of 2879920220 is 220299782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2879920223) 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, 71276 + ... + 104115.

It is an arithmetic number, because the mean of its divisors is an integer number (252301392).

Almost surely, 2^2879920220 is an apocalyptic number.

2879920220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2879920220 is an abundant number, since it is smaller than the sum of its proper divisors (3175313188).

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

2879920220 is a wasteful number, since it uses less digits than its factorization.

2879920220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176221 (or 176219 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 2879920220 is about 53664.8881485837. Note that the first 3 decimals coincide. The cubic root of 2879920220 is about 1422.7441842234.

The spelling of 2879920220 in words is "two billion, eight hundred seventy-nine million, nine hundred twenty thousand, two hundred twenty".