16891772 has 12 divisors (see below), whose sum is σ = 30002280. Its totient is φ = 8319696.

The previous prime is 16891747. The next prime is 16891781. The reversal of 16891772 is 27719861.

It is a super-2 number, since 2×16891772² = 570663922599968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31247 + ... + 31782.

It is an arithmetic number, because the mean of its divisors is an integer number (2500190).

Almost surely, 2^16891772 is an apocalyptic number.

It is an amenable number.

16891772 is a deficient number, since it is larger than the sum of its proper divisors (13110508).

16891772 is a wasteful number, since it uses less digits than its factorization.

16891772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63100 (or 63098 counting only the distinct ones).

The product of its digits is 42336, while the sum is 41.

The square root of 16891772 is about 4109.9600971299. The cubic root of 16891772 is about 256.5813408023.

The spelling of 16891772 in words is "sixteen million, eight hundred ninety-one thousand, seven hundred seventy-two".