16990494 has 8 divisors (see below), whose sum is σ = 33981000. Its totient is φ = 5663496.

The previous prime is 16990489. The next prime is 16990507. The reversal of 16990494 is 49409961.

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

16990494 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1415869 + ... + 1415880.

It is an arithmetic number, because the mean of its divisors is an integer number (4247625).

Almost surely, 2^16990494 is an apocalyptic number.

16990494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16990494 is a wasteful number, since it uses less digits than its factorization.

16990494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831754.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 16990494 is about 4121.9526925961. The cubic root of 16990494 is about 257.0802234577.

The spelling of 16990494 in words is "sixteen million, nine hundred ninety thousand, four hundred ninety-four".