2115238920 has 32 divisors (see below), whose sum is σ = 6345717120. Its totient is φ = 564063680.

The previous prime is 2115238837. The next prime is 2115238921. The reversal of 2115238920 is 298325112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2115238921) 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, 8813376 + ... + 8813615.

It is an arithmetic number, because the mean of its divisors is an integer number (198303660).

Almost surely, 2^2115238920 is an apocalyptic number.

2115238920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115238920 is an abundant number, since it is smaller than the sum of its proper divisors (4230478200).

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

2115238920 is a wasteful number, since it uses less digits than its factorization.

2115238920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17627005 (or 17627001 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 2115238920 is about 45991.7266473004. The cubic root of 2115238920 is about 1283.6692648805.

The spelling of 2115238920 in words is "two billion, one hundred fifteen million, two hundred thirty-eight thousand, nine hundred twenty".