115404520 has 128 divisors (see below), whose sum is σ = 328147200. Its totient is φ = 35481600.

The previous prime is 115404511. The next prime is 115404521. The reversal of 115404520 is 25404511.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 115404491 and 115404500.

It is not an unprimeable number, because it can be changed into a prime (115404521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273910 + ... + 274330.

It is an arithmetic number, because the mean of its divisors is an integer number (2563650).

Almost surely, 2^115404520 is an apocalyptic number.

115404520 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 115404520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164073600).

115404520 is an abundant number, since it is smaller than the sum of its proper divisors (212742680).

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

115404520 is a wasteful number, since it uses less digits than its factorization.

115404520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 115404520 is about 10742.6495800617. The cubic root of 115404520 is about 486.8639366228.

Subtracting from 115404520 its reverse (25404511), we obtain a palindrome (90000009).

The spelling of 115404520 in words is "one hundred fifteen million, four hundred four thousand, five hundred twenty".