16349904 has 40 divisors (see below), whose sum is σ = 46931520. Its totient is φ = 5449824.

The previous prime is 16349897. The next prime is 16349947. The reversal of 16349904 is 40994361.

16349904 is a `hidden beast` number, since 163 + 499 + 0 + 4 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18492 + ... + 19355.

It is an arithmetic number, because the mean of its divisors is an integer number (1173288).

Almost surely, 2^16349904 is an apocalyptic number.

It is an amenable number.

16349904 is an abundant number, since it is smaller than the sum of its proper divisors (30581616).

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

16349904 is a wasteful number, since it uses less digits than its factorization.

16349904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37864 (or 37852 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 16349904 is about 4043.5014529489. The cubic root of 16349904 is about 253.8078609752.

The spelling of 16349904 in words is "sixteen million, three hundred forty-nine thousand, nine hundred four".