16997372 has 12 divisors (see below), whose sum is σ = 33994800. Its totient is φ = 7284576.

The previous prime is 16997371. The next prime is 16997377. The reversal of 16997372 is 27379961.

It is a happy number.

16997372 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16997371) 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, 303497 + ... + 303552.

It is an arithmetic number, because the mean of its divisors is an integer number (2832900).

Almost surely, 2^16997372 is an apocalyptic number.

It is an amenable number.

16997372 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16997372 is a wasteful number, since it uses less digits than its factorization.

16997372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607060 (or 607058 counting only the distinct ones).

The product of its digits is 142884, while the sum is 44.

The square root of 16997372 is about 4122.7869214889. The cubic root of 16997372 is about 257.1149087202.

The spelling of 16997372 in words is "sixteen million, nine hundred ninety-seven thousand, three hundred seventy-two".