16992390 has 16 divisors (see below), whose sum is σ = 40781808. Its totient is φ = 4531296.

The previous prime is 16992329. The next prime is 16992397. The reversal of 16992390 is 9329961.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16992397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283177 + ... + 283236.

It is an arithmetic number, because the mean of its divisors is an integer number (2548863).

Almost surely, 2^16992390 is an apocalyptic number.

16992390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16992390 is an abundant number, since it is smaller than the sum of its proper divisors (23789418).

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

16992390 is a wasteful number, since it uses less digits than its factorization.

16992390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566423.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 16992390 is about 4122.1826742637. The cubic root of 16992390 is about 257.0897857846.

The spelling of 16992390 in words is "sixteen million, nine hundred ninety-two thousand, three hundred ninety".