16649892 has 36 divisors (see below), whose sum is σ = 48100416. Its totient is φ = 4757040.

The previous prime is 16649879. The next prime is 16649911. The reversal of 16649892 is 29894661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×16649892² = 554437807223328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32784 + ... + 33287.

Almost surely, 2^16649892 is an apocalyptic number.

16649892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16649892 is an abundant number, since it is smaller than the sum of its proper divisors (31450524).

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

16649892 is a wasteful number, since it uses less digits than its factorization.

16649892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66088 (or 66083 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 16649892 is about 4080.4279187360. The cubic root of 16649892 is about 255.3507514623.

The spelling of 16649892 in words is "sixteen million, six hundred forty-nine thousand, eight hundred ninety-two".