16909904 has 20 divisors (see below), whose sum is σ = 35741760. Its totient is φ = 7686240.

The previous prime is 16909903. The next prime is 16909927. The reversal of 16909904 is 40990961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16909901) 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, 47864 + ... + 48215.

It is an arithmetic number, because the mean of its divisors is an integer number (1787088).

Almost surely, 2^16909904 is an apocalyptic number.

It is an amenable number.

16909904 is an abundant number, since it is smaller than the sum of its proper divisors (18831856).

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

16909904 is a wasteful number, since it uses less digits than its factorization.

16909904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96098 (or 96092 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 16909904 is about 4112.1653663247. The cubic root of 16909904 is about 256.6731146597.

The spelling of 16909904 in words is "sixteen million, nine hundred nine thousand, nine hundred four".