16390494 has 12 divisors (see below), whose sum is σ = 35512776. Its totient is φ = 5463492.

The previous prime is 16390489. The next prime is 16390531. The reversal of 16390494 is 49409361.

16390494 is a `hidden beast` number, since 163 + 9 + 0 + 494 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 455274 + ... + 455309.

It is an arithmetic number, because the mean of its divisors is an integer number (2959398).

Almost surely, 2^16390494 is an apocalyptic number.

16390494 is an abundant number, since it is smaller than the sum of its proper divisors (19122282).

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

16390494 is a wasteful number, since it uses less digits than its factorization.

16390494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910591 (or 910588 counting only the distinct ones).

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

The square root of 16390494 is about 4048.5175064460. The cubic root of 16390494 is about 254.0177204658.

The spelling of 16390494 in words is "sixteen million, three hundred ninety thousand, four hundred ninety-four".