15115968 has 168 divisors, whose sum is σ = 51986688. Its totient is φ = 4105728.

The previous prime is 15115957. The next prime is 15115979. The reversal of 15115968 is 86951151.

It is an interprime number because it is at equal distance from previous prime (15115957) and next prime (15115979).

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92655 + ... + 92817.

Almost surely, 2^15115968 is an apocalyptic number.

15115968 is a gapful number since it is divisible by the number (18) 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 15115968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25993344).

15115968 is an abundant number, since it is smaller than the sum of its proper divisors (36870720).

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

15115968 is a wasteful number, since it uses less digits than its factorization.

15115968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 198 counting only the distinct ones).

The product of its digits is 10800, while the sum is 36.

The square root of 15115968 is about 3887.9259252203. The cubic root of 15115968 is about 247.2551358462.

The spelling of 15115968 in words is "fifteen million, one hundred fifteen thousand, nine hundred sixty-eight".