15997016 has 16 divisors (see below), whose sum is σ = 34279440. Its totient is φ = 6855840.

The previous prime is 15996997. The next prime is 15997019. The reversal of 15997016 is 61079951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15997019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142775 + ... + 142886.

It is an arithmetic number, because the mean of its divisors is an integer number (2142465).

Almost surely, 2^15997016 is an apocalyptic number.

It is an amenable number.

15997016 is an abundant number, since it is smaller than the sum of its proper divisors (18282424).

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

15997016 is a wasteful number, since it uses less digits than its factorization.

15997016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285674 (or 285670 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 15997016 is about 3999.6269826073. The cubic root of 15997016 is about 251.9685439866.

The spelling of 15997016 in words is "fifteen million, nine hundred ninety-seven thousand, sixteen".