15906216 has 32 divisors (see below), whose sum is σ = 40692960. Its totient is φ = 5178432.

The previous prime is 15906127. The next prime is 15906217. The reversal of 15906216 is 61260951.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (15906217) 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 7 ways as a sum of consecutive naturals, for example, 6675 + ... + 8738.

It is an arithmetic number, because the mean of its divisors is an integer number (1271655).

Almost surely, 2^15906216 is an apocalyptic number.

It is an amenable number.

15906216 is an abundant number, since it is smaller than the sum of its proper divisors (24786744).

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

15906216 is a wasteful number, since it uses less digits than its factorization.

15906216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15465 (or 15461 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 15906216 is about 3988.2597708775. The cubic root of 15906216 is about 251.4909097445.

The spelling of 15906216 in words is "fifteen million, nine hundred six thousand, two hundred sixteen".