16397272 has 8 divisors (see below), whose sum is σ = 30744900. Its totient is φ = 8198632.

The previous prime is 16397263. The next prime is 16397273. The reversal of 16397272 is 27279361.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16397273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1024822 + ... + 1024837.

Almost surely, 2^16397272 is an apocalyptic number.

It is an amenable number.

16397272 is a deficient number, since it is larger than the sum of its proper divisors (14347628).

16397272 is a wasteful number, since it uses less digits than its factorization.

16397272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049665 (or 2049661 counting only the distinct ones).

The product of its digits is 31752, while the sum is 37.

The square root of 16397272 is about 4049.3545164631. The cubic root of 16397272 is about 254.0527304912.

It can be divided in two parts, 1639 and 7272, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 16397272 in words is "sixteen million, three hundred ninety-seven thousand, two hundred seventy-two".