115978144 has 24 divisors (see below), whose sum is σ = 238260960. Its totient is φ = 55467456.

The previous prime is 115978133. The next prime is 115978171. The reversal of 115978144 is 441879511.

It is a junction number, because it is equal to n+sod(n) for n = 115978097 and 115978106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78054 + ... + 79525.

It is an arithmetic number, because the mean of its divisors is an integer number (9927540).

Almost surely, 2^115978144 is an apocalyptic number.

It is an amenable number.

115978144 is an abundant number, since it is smaller than the sum of its proper divisors (122282816).

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

115978144 is a wasteful number, since it uses less digits than its factorization.

115978144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157612 (or 157604 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The square root of 115978144 is about 10769.3149271437. The cubic root of 115978144 is about 487.6692643877.

The spelling of 115978144 in words is "one hundred fifteen million, nine hundred seventy-eight thousand, one hundred forty-four".