16959880 has 96 divisors (see below), whose sum is σ = 47093400. Its totient is φ = 5462016.

The previous prime is 16959869. The next prime is 16959889. The reversal of 16959880 is 8895961.

It can be written as a sum of positive squares in 4 ways, for example, as 16597476 + 362404 = 4074^2 + 602^2 .

It is a super-2 number, since 2×16959880² = 575275059228800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16959880.

It is not an unprimeable number, because it can be changed into a prime (16959889) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33066 + ... + 33574.

Almost surely, 2^16959880 is an apocalyptic number.

16959880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16959880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23546700).

16959880 is an abundant number, since it is smaller than the sum of its proper divisors (30133520).

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

16959880 is a wasteful number, since it uses less digits than its factorization.

16959880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 16959880 is about 4118.2374870811. The cubic root of 16959880 is about 256.9257255827.

The spelling of 16959880 in words is "sixteen million, nine hundred fifty-nine thousand, eight hundred eighty".