115377520 has 40 divisors (see below), whose sum is σ = 270647856. Its totient is φ = 45739008.

The previous prime is 115377511. The next prime is 115377529. The reversal of 115377520 is 25773511.

It is an interprime number because it is at equal distance from previous prime (115377511) and next prime (115377529).

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115377529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2659 + ... + 15421.

Almost surely, 2^115377520 is an apocalyptic number.

115377520 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 115377520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135323928).

115377520 is an abundant number, since it is smaller than the sum of its proper divisors (155270336).

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

115377520 is a wasteful number, since it uses less digits than its factorization.

115377520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12889 (or 12883 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 115377520 is about 10741.3928333340. The cubic root of 115377520 is about 486.8259648242.

The spelling of 115377520 in words is "one hundred fifteen million, three hundred seventy-seven thousand, five hundred twenty".