16897980 has 48 divisors (see below), whose sum is σ = 51617664. Its totient is φ = 4096320.

The previous prime is 16897963. The next prime is 16897987. The reversal of 16897980 is 8979861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16897987) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12142 + ... + 13461.

It is an arithmetic number, because the mean of its divisors is an integer number (1075368).

Almost surely, 2^16897980 is an apocalyptic number.

16897980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16897980 is an abundant number, since it is smaller than the sum of its proper divisors (34719684).

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

16897980 is a wasteful number, since it uses less digits than its factorization.

16897980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25626 (or 25624 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 16897980 is about 4110.7152662280. The cubic root of 16897980 is about 256.6127695529.

It can be divided in two parts, 1689 and 7980, that added together give a palindrome (9669).

The spelling of 16897980 in words is "sixteen million, eight hundred ninety-seven thousand, nine hundred eighty".