16281280 has 56 divisors (see below), whose sum is σ = 39300912. Its totient is φ = 6423552.

The previous prime is 16281277. The next prime is 16281283. The reversal of 16281280 is 8218261.

16281280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16281277) and next prime (16281283).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16281283) 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, 26254 + ... + 26866.

It is an arithmetic number, because the mean of its divisors is an integer number (701802).

Almost surely, 2^16281280 is an apocalyptic number.

16281280 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 16281280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19650456).

16281280 is an abundant number, since it is smaller than the sum of its proper divisors (23019632).

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

16281280 is an equidigital number, since it uses as much as digits as its factorization.

16281280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 16281280 is about 4035.0068153598. The cubic root of 16281280 is about 253.4522679459.

It can be divided in two parts, 16281 and 280, that added together give a palindrome (16561).

The spelling of 16281280 in words is "sixteen million, two hundred eighty-one thousand, two hundred eighty".