16390046 has 32 divisors (see below), whose sum is σ = 27216000. Its totient is φ = 7372512.

The previous prime is 16390043. The next prime is 16390061. The reversal of 16390046 is 64009361.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16390043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117845 + ... + 117983.

It is an arithmetic number, because the mean of its divisors is an integer number (850500).

Almost surely, 2^16390046 is an apocalyptic number.

16390046 is a deficient number, since it is larger than the sum of its proper divisors (10825954).

16390046 is a wasteful number, since it uses less digits than its factorization.

16390046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 16390046 is about 4048.4621771730. The cubic root of 16390046 is about 254.0154060964.

It can be divided in two parts, 163 and 90046, that added together give a palindrome (90209).

The spelling of 16390046 in words is "sixteen million, three hundred ninety thousand, forty-six".