15689916 has 96 divisors (see below), whose sum is σ = 45480960. Its totient is φ = 4636800.

The previous prime is 15689911. The next prime is 15689941. The reversal of 15689916 is 61998651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15689911) 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, 55696 + ... + 55976.

It is an arithmetic number, because the mean of its divisors is an integer number (473760).

Almost surely, 2^15689916 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 15689916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22740480).

15689916 is an abundant number, since it is smaller than the sum of its proper divisors (29791044).

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

15689916 is a wasteful number, since it uses less digits than its factorization.

15689916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 344 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 15689916 is about 3961.0498608324. The cubic root of 15689916 is about 250.3457403008.

The spelling of 15689916 in words is "fifteen million, six hundred eighty-nine thousand, nine hundred sixteen".