2864320920 has 64 divisors (see below), whose sum is σ = 9547740000. Its totient is φ = 763818624.

The previous prime is 2864320891. The next prime is 2864320937. The reversal of 2864320920 is 290234682.

2864320920 is a `hidden beast` number, since 2 + 8 + 643 + 2 + 0 + 9 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1324995 + ... + 1327154.

Almost surely, 2^2864320920 is an apocalyptic number.

2864320920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2864320920 is an abundant number, since it is smaller than the sum of its proper divisors (6683419080).

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

2864320920 is a wasteful number, since it uses less digits than its factorization.

2864320920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2652169 (or 2652159 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 2864320920 is about 53519.3508929247. The cubic root of 2864320920 is about 1420.1707326287.

The spelling of 2864320920 in words is "two billion, eight hundred sixty-four million, three hundred twenty thousand, nine hundred twenty".