16398680 has 16 divisors (see below), whose sum is σ = 36897120. Its totient is φ = 6559456.

The previous prime is 16398671. The next prime is 16398731. The reversal of 16398680 is 8689361.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 204944 + ... + 205023.

It is an arithmetic number, because the mean of its divisors is an integer number (2306070).

Almost surely, 2^16398680 is an apocalyptic number.

16398680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16398680 is an abundant number, since it is smaller than the sum of its proper divisors (20498440).

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

16398680 is a wasteful number, since it uses less digits than its factorization.

16398680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409978 (or 409974 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 16398680 is about 4049.5283676004. The cubic root of 16398680 is about 254.0600019448.

The spelling of 16398680 in words is "sixteen million, three hundred ninety-eight thousand, six hundred eighty".