16961280 has 144 divisors (see below), whose sum is σ = 62006784. Its totient is φ = 3870720.

The previous prime is 16961279. The next prime is 16961293. The reversal of 16961280 is 8216961.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26565 + ... + 27195.

Almost surely, 2^16961280 is an apocalyptic number.

16961280 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 16961280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31003392).

16961280 is an abundant number, since it is smaller than the sum of its proper divisors (45045504).

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

16961280 is an equidigital number, since it uses as much as digits as its factorization.

16961280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 16961280 is about 4118.4074592007. The cubic root of 16961280 is about 256.9327949354.

The spelling of 16961280 in words is "sixteen million, nine hundred sixty-one thousand, two hundred eighty".