16891892 has 6 divisors (see below), whose sum is σ = 29560818. Its totient is φ = 8445944.

The previous prime is 16891879. The next prime is 16891921. The reversal of 16891892 is 29819861.

It can be written as a sum of positive squares in only one way, i.e., 16434916 + 456976 = 4054^2 + 676^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2111483 + ... + 2111490.

It is an arithmetic number, because the mean of its divisors is an integer number (4926803).

Almost surely, 2^16891892 is an apocalyptic number.

It is an amenable number.

16891892 is a deficient number, since it is larger than the sum of its proper divisors (12668926).

16891892 is a wasteful number, since it uses less digits than its factorization.

16891892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222977 (or 4222975 counting only the distinct ones).

The product of its digits is 62208, while the sum is 44.

The square root of 16891892 is about 4109.9746957859. The cubic root of 16891892 is about 256.5819483898.

The spelling of 16891892 in words is "sixteen million, eight hundred ninety-one thousand, eight hundred ninety-two".