28143360 has 216 divisors, whose sum is σ = 111602400. Its totient is φ = 6414336.

The previous prime is 28143331. The next prime is 28143373. The reversal of 28143360 is 6334182.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80466 + ... + 80814.

Almost surely, 2^28143360 is an apocalyptic number.

28143360 is a gapful number since it is divisible by the number (20) 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 28143360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55801200).

28143360 is an abundant number, since it is smaller than the sum of its proper divisors (83459040).

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

28143360 is a wasteful number, since it uses less digits than its factorization.

28143360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 28143360 is about 5305.0315738928. The cubic root of 28143360 is about 304.1762597421.

The spelling of 28143360 in words is "twenty-eight million, one hundred forty-three thousand, three hundred sixty".