2856455020 has 24 divisors (see below), whose sum is σ = 5999835744. Its totient is φ = 1142338176.

The previous prime is 2856455009. The next prime is 2856455029. The reversal of 2856455020 is 205546582.

It is not an unprimeable number, because it can be changed into a prime (2856455029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103312 + ... + 128008.

It is an arithmetic number, because the mean of its divisors is an integer number (249993156).

Almost surely, 2^2856455020 is an apocalyptic number.

2856455020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2856455020 is an abundant number, since it is smaller than the sum of its proper divisors (3143380724).

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

2856455020 is a wasteful number, since it uses less digits than its factorization.

2856455020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30489 (or 30487 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The square root of 2856455020 is about 53445.8138678793. The cubic root of 2856455020 is about 1418.8695327235.

The spelling of 2856455020 in words is "two billion, eight hundred fifty-six million, four hundred fifty-five thousand, twenty".