16939290 has 16 divisors (see below), whose sum is σ = 40654368. Its totient is φ = 4517136.

The previous prime is 16939283. The next prime is 16939297. The reversal of 16939290 is 9293961.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16939283) and next prime (16939297).

It is not an unprimeable number, because it can be changed into a prime (16939297) 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, 282292 + ... + 282351.

It is an arithmetic number, because the mean of its divisors is an integer number (2540898).

Almost surely, 2^16939290 is an apocalyptic number.

16939290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16939290 is an abundant number, since it is smaller than the sum of its proper divisors (23715078).

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

16939290 is a wasteful number, since it uses less digits than its factorization.

16939290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564653.

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

The square root of 16939290 is about 4115.7368720558. The cubic root of 16939290 is about 256.8217106381.

The spelling of 16939290 in words is "sixteen million, nine hundred thirty-nine thousand, two hundred ninety".