16891272 has 48 divisors (see below), whose sum is σ = 45942000. Its totient is φ = 5606496.

The previous prime is 16891267. The next prime is 16891307. The reversal of 16891272 is 27219861.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26979 + ... + 27597.

It is an arithmetic number, because the mean of its divisors is an integer number (957125).

Almost surely, 2^16891272 is an apocalyptic number.

16891272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16891272 is an abundant number, since it is smaller than the sum of its proper divisors (29050728).

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

16891272 is a wasteful number, since it uses less digits than its factorization.

16891272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 1003 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 16891272 is about 4109.8992688386. The cubic root of 16891272 is about 256.5788091568.

The spelling of 16891272 in words is "sixteen million, eight hundred ninety-one thousand, two hundred seventy-two".