15996906 has 32 divisors (see below), whose sum is σ = 36158400. Its totient is φ = 5240880.

The previous prime is 15996889. The next prime is 15996923. The reversal of 15996906 is 60969951.

It is an interprime number because it is at equal distance from previous prime (15996889) and next prime (15996923).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 676 + ... + 5696.

It is an arithmetic number, because the mean of its divisors is an integer number (1129950).

Almost surely, 2^15996906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15996906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18079200).

15996906 is an abundant number, since it is smaller than the sum of its proper divisors (20161494).

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

15996906 is a wasteful number, since it uses less digits than its factorization.

15996906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091 (or 5085 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 15996906 is about 3999.6132313012. The cubic root of 15996906 is about 251.9679664497.

The spelling of 15996906 in words is "fifteen million, nine hundred ninety-six thousand, nine hundred six".