15961368 has 128 divisors (see below), whose sum is σ = 46656000. Its totient is φ = 4515840.

The previous prime is 15961367. The next prime is 15961381. The reversal of 15961368 is 86316951.

15961368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15961367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224773 + ... + 224843.

It is an arithmetic number, because the mean of its divisors is an integer number (364500).

Almost surely, 2^15961368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15961368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23328000).

15961368 is an abundant number, since it is smaller than the sum of its proper divisors (30694632).

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

15961368 is a wasteful number, since it uses less digits than its factorization.

15961368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 141 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 15961368 is about 3995.1680815705. The cubic root of 15961368 is about 251.7812412436.

The spelling of 15961368 in words is "fifteen million, nine hundred sixty-one thousand, three hundred sixty-eight".