115252220 has 12 divisors (see below), whose sum is σ = 242029704. Its totient is φ = 46100880.

The previous prime is 115252217. The next prime is 115252237. The reversal of 115252220 is 22252511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5762611 = 115252220 / (1 + 1 + 5 + 2 + 5 + 2 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 115252192 and 115252201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2881286 + ... + 2881325.

It is an arithmetic number, because the mean of its divisors is an integer number (20169142).

Almost surely, 2^115252220 is an apocalyptic number.

115252220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115252220 is an abundant number, since it is smaller than the sum of its proper divisors (126777484).

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

115252220 is a wasteful number, since it uses less digits than its factorization.

115252220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5762620 (or 5762618 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 115252220 is about 10735.5586720021. The cubic root of 115252220 is about 486.6496699721.

The spelling of 115252220 in words is "one hundred fifteen million, two hundred fifty-two thousand, two hundred twenty".