15997092 has 12 divisors (see below), whose sum is σ = 37326576. Its totient is φ = 5332360.

The previous prime is 15997073. The next prime is 15997099. The reversal of 15997092 is 29079951.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (15997099) 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, 666534 + ... + 666557.

It is an arithmetic number, because the mean of its divisors is an integer number (3110548).

Almost surely, 2^15997092 is an apocalyptic number.

15997092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15997092 is an abundant number, since it is smaller than the sum of its proper divisors (21329484).

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

15997092 is a wasteful number, since it uses less digits than its factorization.

15997092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333098 (or 1333096 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 15997092 is about 3999.6364834820. The cubic root of 15997092 is about 251.9689430106.

The spelling of 15997092 in words is "fifteen million, nine hundred ninety-seven thousand, ninety-two".