280504672 has 48 divisors (see below), whose sum is σ = 633346560. Its totient is φ = 119795328.

The previous prime is 280504669. The next prime is 280504681. The reversal of 280504672 is 276405082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66729 + ... + 70807.

It is an arithmetic number, because the mean of its divisors is an integer number (13194720).

Almost surely, 2^280504672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280504672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316673280).

280504672 is an abundant number, since it is smaller than the sum of its proper divisors (352841888).

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

280504672 is a wasteful number, since it uses less digits than its factorization.

280504672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4403 (or 4395 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 280504672 is about 16748.2737020864. The cubic root of 280504672 is about 654.6060774565.

The spelling of 280504672 in words is "two hundred eighty million, five hundred four thousand, six hundred seventy-two".