15520968 has 48 divisors (see below), whose sum is σ = 42626220. Its totient is φ = 5101056.

The previous prime is 15520961. The next prime is 15520969. The reversal of 15520968 is 86902551.

It is a happy number.

15520968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 14884164 + 636804 = 3858^2 + 798^2 .

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

It is not an unprimeable number, because it can be changed into a prime (15520961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3780 + ... + 6732.

Almost surely, 2^15520968 is an apocalyptic number.

15520968 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 15520968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21313110).

15520968 is an abundant number, since it is smaller than the sum of its proper divisors (27105252).

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

15520968 is a wasteful number, since it uses less digits than its factorization.

15520968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038 (or 3031 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 15520968 is about 3939.6659756888. The cubic root of 15520968 is about 249.4439267137.

The spelling of 15520968 in words is "fifteen million, five hundred twenty thousand, nine hundred sixty-eight".