115197420 has 48 divisors (see below), whose sum is σ = 347366880. Its totient is φ = 28356096.

The previous prime is 115197403. The next prime is 115197449. The reversal of 115197420 is 24791511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73065 + ... + 74624.

It is an arithmetic number, because the mean of its divisors is an integer number (7236810).

Almost surely, 2^115197420 is an apocalyptic number.

115197420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115197420 is an abundant number, since it is smaller than the sum of its proper divisors (232169460).

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

115197420 is a wasteful number, since it uses less digits than its factorization.

115197420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147714 (or 147712 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 115197420 is about 10733.0061026723. The cubic root of 115197420 is about 486.5725271926.

The spelling of 115197420 in words is "one hundred fifteen million, one hundred ninety-seven thousand, four hundred twenty".