280720968 has 48 divisors (see below), whose sum is σ = 771410640. Its totient is φ = 85066080.

The previous prime is 280720943. The next prime is 280720981. The reversal of 280720968 is 869027082.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45430 + ... + 51237.

It is an arithmetic number, because the mean of its divisors is an integer number (16071055).

Almost surely, 2^280720968 is an apocalyptic number.

It is an amenable number.

280720968 is an abundant number, since it is smaller than the sum of its proper divisors (490689672).

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

280720968 is a wasteful number, since it uses less digits than its factorization.

280720968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96698 (or 96683 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 280720968 is about 16754.7297202909. The cubic root of 280720968 is about 654.7742889137.

The spelling of 280720968 in words is "two hundred eighty million, seven hundred twenty thousand, nine hundred sixty-eight".