115944640 has 112 divisors (see below), whose sum is σ = 318357504. Its totient is φ = 39398400.

The previous prime is 115944611. The next prime is 115944677. The reversal of 115944640 is 46449511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 115944596 and 115944605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427705 + ... + 427975.

Almost surely, 2^115944640 is an apocalyptic number.

115944640 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 115944640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159178752).

115944640 is an abundant number, since it is smaller than the sum of its proper divisors (202412864).

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

115944640 is a wasteful number, since it uses less digits than its factorization.

115944640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 115944640 is about 10767.7592840851. The cubic root of 115944640 is about 487.6223002383.

The spelling of 115944640 in words is "one hundred fifteen million, nine hundred forty-four thousand, six hundred forty".