16398380 has 24 divisors (see below), whose sum is σ = 35548800. Its totient is φ = 6347520.

The previous prime is 16398377. The next prime is 16398391. The reversal of 16398380 is 8389361.

16398380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12605 + ... + 13844.

It is an arithmetic number, because the mean of its divisors is an integer number (1481200).

Almost surely, 2^16398380 is an apocalyptic number.

16398380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16398380 is an abundant number, since it is smaller than the sum of its proper divisors (19150420).

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

16398380 is a wasteful number, since it uses less digits than its factorization.

16398380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26489 (or 26487 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 16398380 is about 4049.4913260804. The cubic root of 16398380 is about 254.0584526643.

The spelling of 16398380 in words is "sixteen million, three hundred ninety-eight thousand, three hundred eighty".