115379280 has 120 divisors (see below), whose sum is σ = 389975040. Its totient is φ = 30570240.

The previous prime is 115379273. The next prime is 115379281. The reversal of 115379280 is 82973511.

115379280 is a `hidden beast` number, since 1 + 1 + 5 + 379 + 280 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115379281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137101 + ... + 137939.

It is an arithmetic number, because the mean of its divisors is an integer number (3249792).

Almost surely, 2^115379280 is an apocalyptic number.

115379280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115379280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194987520).

115379280 is an abundant number, since it is smaller than the sum of its proper divisors (274595760).

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

115379280 is a wasteful number, since it uses less digits than its factorization.

115379280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 115379280 is about 10741.4747590822. The cubic root of 115379280 is about 486.8284402034.

The spelling of 115379280 in words is "one hundred fifteen million, three hundred seventy-nine thousand, two hundred eighty".