115163780 has 24 divisors (see below), whose sum is σ = 256070808. Its totient is φ = 43355648.

The previous prime is 115163777. The next prime is 115163801. The reversal of 115163780 is 87361511.

It can be written as a sum of positive squares in 4 ways, for example, as 59691076 + 55472704 = 7726^2 + 7448^2 .

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, 169019 + ... + 169698.

It is an arithmetic number, because the mean of its divisors is an integer number (10669617).

Almost surely, 2^115163780 is an apocalyptic number.

115163780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115163780 is an abundant number, since it is smaller than the sum of its proper divisors (140907028).

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

115163780 is a wasteful number, since it uses less digits than its factorization.

115163780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338743 (or 338741 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 115163780 is about 10731.4388597243. The cubic root of 115163780 is about 486.5251595421.

The spelling of 115163780 in words is "one hundred fifteen million, one hundred sixty-three thousand, seven hundred eighty".