16634394 has 24 divisors (see below), whose sum is σ = 41190240. Its totient is φ = 4752648.

The previous prime is 16634351. The next prime is 16634407. The reversal of 16634394 is 49343661.

16634394 is a `hidden beast` number, since 16 + 634 + 3 + 9 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65884 + ... + 66135.

It is an arithmetic number, because the mean of its divisors is an integer number (1716260).

Almost surely, 2^16634394 is an apocalyptic number.

16634394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16634394 is an abundant number, since it is smaller than the sum of its proper divisors (24555846).

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

16634394 is a wasteful number, since it uses less digits than its factorization.

16634394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132034 (or 132031 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 16634394 is about 4078.5284110816. The cubic root of 16634394 is about 255.2714986067.

The spelling of 16634394 in words is "sixteen million, six hundred thirty-four thousand, three hundred ninety-four".