115503020 has 24 divisors (see below), whose sum is σ = 243625200. Its totient is φ = 45997632.

The previous prime is 115503019. The next prime is 115503029. The reversal of 115503020 is 20305511.

It is a self number, because there is not a number n which added to its sum of digits gives 115503020.

It is not an unprimeable number, because it can be changed into a prime (115503029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8030 + ... + 17189.

It is an arithmetic number, because the mean of its divisors is an integer number (10151050).

Almost surely, 2^115503020 is an apocalyptic number.

115503020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115503020 is an abundant number, since it is smaller than the sum of its proper divisors (128122180).

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

115503020 is a wasteful number, since it uses less digits than its factorization.

115503020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25457 (or 25455 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 115503020 is about 10747.2331322997. The cubic root of 115503020 is about 487.0024131758.

Adding to 115503020 its reverse (20305511), we get a palindrome (135808531).

The spelling of 115503020 in words is "one hundred fifteen million, five hundred three thousand, twenty".