16891446 has 32 divisors (see below), whose sum is σ = 39691008. Its totient is φ = 4724640.

The previous prime is 16891439. The next prime is 16891481. The reversal of 16891446 is 64419861.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8986 + ... + 10701.

It is an arithmetic number, because the mean of its divisors is an integer number (1240344).

Almost surely, 2^16891446 is an apocalyptic number.

16891446 is an abundant number, since it is smaller than the sum of its proper divisors (22799562).

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

16891446 is a wasteful number, since it uses less digits than its factorization.

16891446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19716.

The product of its digits is 41472, while the sum is 39.

The square root of 16891446 is about 4109.9204371861. The cubic root of 16891446 is about 256.5796901751.

The spelling of 16891446 in words is "sixteen million, eight hundred ninety-one thousand, four hundred forty-six".