16404634 has 8 divisors (see below), whose sum is σ = 24744960. Its totient is φ = 8156316.

The previous prime is 16404623. The next prime is 16404637. The reversal of 16404634 is 43640461.

It is a happy number.

16404634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16404634² = 538224033347912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16404637) 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, 22554 + ... + 23269.

It is an arithmetic number, because the mean of its divisors is an integer number (3093120).

Almost surely, 2^16404634 is an apocalyptic number.

16404634 is a deficient number, since it is larger than the sum of its proper divisors (8340326).

16404634 is a wasteful number, since it uses less digits than its factorization.

16404634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46004.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 16404634 is about 4050.2634482216. The cubic root of 16404634 is about 254.0907460903.

The spelling of 16404634 in words is "sixteen million, four hundred four thousand, six hundred thirty-four".