2857015220 has 24 divisors (see below), whose sum is σ = 6001395624. Its totient is φ = 1142489216.

The previous prime is 2857015201. The next prime is 2857015261. The reversal of 2857015220 is 225107582.

It is a happy number.

2857015220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 225120016 + 2631895204 = 15004^2 + 51302^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62462 + ... + 98058.

It is an arithmetic number, because the mean of its divisors is an integer number (250058151).

Almost surely, 2^2857015220 is an apocalyptic number.

2857015220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2857015220 is an abundant number, since it is smaller than the sum of its proper divisors (3144380404).

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

2857015220 is a wasteful number, since it uses less digits than its factorization.

2857015220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39619 (or 39617 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 2857015220 is about 53451.0544330044. The cubic root of 2857015220 is about 1418.9622815737.

The spelling of 2857015220 in words is "two billion, eight hundred fifty-seven million, fifteen thousand, two hundred twenty".