115519720 has 16 divisors (see below), whose sum is σ = 259919460. Its totient is φ = 46207872.

The previous prime is 115519711. The next prime is 115519721. The reversal of 115519720 is 27915511.

It can be written as a sum of positive squares in 2 ways, for example, as 109788484 + 5731236 = 10478^2 + 2394^2 .

It is not an unprimeable number, because it can be changed into a prime (115519721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1443957 + ... + 1444036.

Almost surely, 2^115519720 is an apocalyptic number.

115519720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115519720 is an abundant number, since it is smaller than the sum of its proper divisors (144399740).

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

115519720 is a wasteful number, since it uses less digits than its factorization.

115519720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888004 (or 2888000 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 31.

The square root of 115519720 is about 10748.0100483764. The cubic root of 115519720 is about 487.0258831202.

The spelling of 115519720 in words is "one hundred fifteen million, five hundred nineteen thousand, seven hundred twenty".