280608080 has 20 divisors (see below), whose sum is σ = 652413972. Its totient is φ = 112243200.

The previous prime is 280608061. The next prime is 280608149. The reversal of 280608080 is 80806082.

It can be written as a sum of positive squares in 2 ways, for example, as 166203664 + 114404416 = 12892^2 + 10696^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×280608080² = 157481789122572800, which contains 22 as substring.

It is a congruent number.

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, 1753721 + ... + 1753880.

Almost surely, 2^280608080 is an apocalyptic number.

280608080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280608080 is an abundant number, since it is smaller than the sum of its proper divisors (371805892).

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

280608080 is a wasteful number, since it uses less digits than its factorization.

280608080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507614 (or 3507608 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 280608080 is about 16751.3605417590. The cubic root of 280608080 is about 654.6865077138.

The spelling of 280608080 in words is "two hundred eighty million, six hundred eight thousand, eighty".