16272891 has 24 divisors (see below), whose sum is σ = 24760320. Its totient is φ = 10278576.

The previous prime is 16272887. The next prime is 16272901. The reversal of 16272891 is 19827261.

16272891 is a `hidden beast` number, since 1 + 627 + 28 + 9 + 1 = 666.

It is not a de Polignac number, because 16272891 - 2² = 16272887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16272821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25980 + ... + 26598.

It is an arithmetic number, because the mean of its divisors is an integer number (1031680).

Almost surely, 2^16272891 is an apocalyptic number.

16272891 is a deficient number, since it is larger than the sum of its proper divisors (8487429).

16272891 is a wasteful number, since it uses less digits than its factorization.

16272891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 772 counting only the distinct ones).

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

The square root of 16272891 is about 4033.9671540557. The cubic root of 16272891 is about 253.4087296746.

The spelling of 16272891 in words is "sixteen million, two hundred seventy-two thousand, eight hundred ninety-one".