16398980 has 24 divisors (see below), whose sum is σ = 37087512. Its totient is φ = 6054912.

The previous prime is 16398979. The next prime is 16398983. The reversal of 16398980 is 8989361.

16398980 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 891136 + 15507844 = 944^2 + 3938^2 .

It is not an unprimeable number, because it can be changed into a prime (16398983) 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, 31277 + ... + 31796.

It is an arithmetic number, because the mean of its divisors is an integer number (1545313).

Almost surely, 2^16398980 is an apocalyptic number.

16398980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16398980 is an abundant number, since it is smaller than the sum of its proper divisors (20688532).

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

16398980 is a wasteful number, since it uses less digits than its factorization.

16398980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63095 (or 63093 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 16398980 is about 4049.5654087815. The cubic root of 16398980 is about 254.0615512064.

The spelling of 16398980 in words is "sixteen million, three hundred ninety-eight thousand, nine hundred eighty".