16344890 has 8 divisors (see below), whose sum is σ = 29420820. Its totient is φ = 6537952.

The previous prime is 16344847. The next prime is 16344901. The reversal of 16344890 is 9844361.

It can be written as a sum of positive squares in 2 ways, for example, as 15342889 + 1002001 = 3917^2 + 1001^2 .

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

It is a super-2 number, since 2×16344890² = 534310858224200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16344890.

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, 817235 + ... + 817254.

Almost surely, 2^16344890 is an apocalyptic number.

16344890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16344890 is a deficient number, since it is larger than the sum of its proper divisors (13075930).

16344890 is a wasteful number, since it uses less digits than its factorization.

16344890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634496.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 16344890 is about 4042.8813982109. The cubic root of 16344890 is about 253.7819133667.

The spelling of 16344890 in words is "sixteen million, three hundred forty-four thousand, eight hundred ninety".