16890372 has 36 divisors (see below), whose sum is σ = 44553600. Its totient is φ = 5385072.

The previous prime is 16890371. The next prime is 16890397. The reversal of 16890372 is 27309861.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16890371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9372 + ... + 11027.

It is an arithmetic number, because the mean of its divisors is an integer number (1237600).

Almost surely, 2^16890372 is an apocalyptic number.

16890372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16890372 is an abundant number, since it is smaller than the sum of its proper divisors (27663228).

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

16890372 is a wasteful number, since it uses less digits than its factorization.

16890372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20432 (or 20427 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 16890372 is about 4109.7897756455. The cubic root of 16890372 is about 256.5742520690.

The spelling of 16890372 in words is "sixteen million, eight hundred ninety thousand, three hundred seventy-two".