16992320 has 28 divisors (see below), whose sum is σ = 40463724. Its totient is φ = 6796800.

The previous prime is 16992319. The next prime is 16992323. The reversal of 16992320 is 2329961.

It can be written as a sum of positive squares in 2 ways, for example, as 10601536 + 6390784 = 3256^2 + 2528^2 .

It is a super-3 number, since 3×16992320³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (16992323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26231 + ... + 26870.

It is an arithmetic number, because the mean of its divisors is an integer number (1445133).

Almost surely, 2^16992320 is an apocalyptic number.

16992320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16992320 is an abundant number, since it is smaller than the sum of its proper divisors (23471404).

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

16992320 is an equidigital number, since it uses as much as digits as its factorization.

16992320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53118 (or 53108 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 16992320 is about 4122.1741836075. The cubic root of 16992320 is about 257.0894327578.

The spelling of 16992320 in words is "sixteen million, nine hundred ninety-two thousand, three hundred twenty".