2115710380 has 24 divisors (see below), whose sum is σ = 5077705248. Its totient is φ = 725386368.

The previous prime is 2115710353. The next prime is 2115710411. The reversal of 2115710380 is 830175112.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 7555969 + ... + 7556248.

It is an arithmetic number, because the mean of its divisors is an integer number (211571052).

Almost surely, 2^2115710380 is an apocalyptic number.

2115710380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115710380 is an abundant number, since it is smaller than the sum of its proper divisors (2961994868).

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

2115710380 is a wasteful number, since it uses less digits than its factorization.

2115710380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15112233 (or 15112231 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 2115710380 is about 45996.8518487950. The cubic root of 2115710380 is about 1283.7646290098.

Adding to 2115710380 its reverse (830175112), we get a palindrome (2945885492).

The spelling of 2115710380 in words is "two billion, one hundred fifteen million, seven hundred ten thousand, three hundred eighty".