2864155872 has 48 divisors (see below), whose sum is σ = 7523267472. Its totient is φ = 954101760.

The previous prime is 2864155859. The next prime is 2864155883. The reversal of 2864155872 is 2785514682.

2864155872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×2864155872² = 16406777718224160768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 154122 + ... + 171702.

It is an arithmetic number, because the mean of its divisors is an integer number (156734739).

Almost surely, 2^2864155872 is an apocalyptic number.

It is an amenable number.

2864155872 is an abundant number, since it is smaller than the sum of its proper divisors (4659111600).

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

2864155872 is a wasteful number, since it uses less digits than its factorization.

2864155872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19291 (or 19283 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 48.

The square root of 2864155872 is about 53517.8089237592. The cubic root of 2864155872 is about 1420.1434543956.

The spelling of 2864155872 in words is "two billion, eight hundred sixty-four million, one hundred fifty-five thousand, eight hundred seventy-two".