16133994 has 24 divisors (see below), whose sum is σ = 36477792. Its totient is φ = 5144040.

The previous prime is 16133977. The next prime is 16134007. The reversal of 16133994 is 49933161.

16133994 is a `hidden beast` number, since 1 + 613 + 39 + 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, 19072 + ... + 19899.

It is an arithmetic number, because the mean of its divisors is an integer number (1519908).

Almost surely, 2^16133994 is an apocalyptic number.

16133994 is an abundant number, since it is smaller than the sum of its proper divisors (20343798).

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

16133994 is a wasteful number, since it uses less digits than its factorization.

16133994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39002 (or 38999 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 16133994 is about 4016.7143289012. The cubic root of 16133994 is about 252.6856798472.

The spelling of 16133994 in words is "sixteen million, one hundred thirty-three thousand, nine hundred ninety-four".