280383980 has 12 divisors (see below), whose sum is σ = 588806400. Its totient is φ = 112153584.

The previous prime is 280383973. The next prime is 280383991. The reversal of 280383980 is 89383082.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7009580 + ... + 7009619.

It is an arithmetic number, because the mean of its divisors is an integer number (49067200).

Almost surely, 2^280383980 is an apocalyptic number.

280383980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280383980 is an abundant number, since it is smaller than the sum of its proper divisors (308422420).

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

280383980 is a wasteful number, since it uses less digits than its factorization.

280383980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14019208 (or 14019206 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 280383980 is about 16744.6701968119. The cubic root of 280383980 is about 654.5121787821.

The spelling of 280383980 in words is "two hundred eighty million, three hundred eighty-three thousand, nine hundred eighty".