16323490 has 16 divisors (see below), whose sum is σ = 29714040. Its totient is φ = 6455680.

The previous prime is 16323487. The next prime is 16323499. The reversal of 16323490 is 9432361.

16323490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6953769 + 9369721 = 2637^2 + 3061^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16323499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8281 + ... + 10060.

Almost surely, 2^16323490 is an apocalyptic number.

16323490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16323490 is a deficient number, since it is larger than the sum of its proper divisors (13390550).

16323490 is a wasteful number, since it uses less digits than its factorization.

16323490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18437.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 16323490 is about 4040.2339041199. The cubic root of 16323490 is about 253.6711079943.

It can be divided in two parts, 163 and 23490, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 16323490 in words is "sixteen million, three hundred twenty-three thousand, four hundred ninety".