16438790 has 16 divisors (see below), whose sum is σ = 30876768. Its totient is φ = 6289536.

The previous prime is 16438789. The next prime is 16438817. The reversal of 16438790 is 9783461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35507 + ... + 35966.

It is an arithmetic number, because the mean of its divisors is an integer number (1929798).

Almost surely, 2^16438790 is an apocalyptic number.

16438790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16438790 is a deficient number, since it is larger than the sum of its proper divisors (14437978).

16438790 is a wasteful number, since it uses less digits than its factorization.

16438790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71503.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 16438790 is about 4054.4777715509. The cubic root of 16438790 is about 254.2669708322.

The spelling of 16438790 in words is "sixteen million, four hundred thirty-eight thousand, seven hundred ninety".