280412160 has 240 divisors, whose sum is σ = 1031767296. Its totient is φ = 63700992.

The previous prime is 280412141. The next prime is 280412173. The reversal of 280412160 is 61214082.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 280412160.

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, 1720239 + ... + 1720401.

Almost surely, 2^280412160 is an apocalyptic number.

280412160 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 280412160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515883648).

280412160 is an abundant number, since it is smaller than the sum of its proper divisors (751355136).

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

280412160 is an equidigital number, since it uses as much as digits as its factorization.

280412160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 280412160 is about 16745.5116374508. The cubic root of 280412160 is about 654.5341053027.

The spelling of 280412160 in words is "two hundred eighty million, four hundred twelve thousand, one hundred sixty".