280372 has 12 divisors (see below), whose sum is σ = 507780. Its totient is φ = 135296.

The previous prime is 280351. The next prime is 280373. The reversal of 280372 is 273082.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 224676 + 55696 = 474^2 + 236^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1093 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (42315).

2²⁸⁰³⁷² is an apocalyptic number.

It is an amenable number.

280372 is a deficient number, since it is larger than the sum of its proper divisors (227408).

280372 is a wasteful number, since it uses less digits than its factorization.

280372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450 (or 2448 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 280372 is about 529.5016524998. The cubic root of 280372 is about 65.4502856842.

The spelling of 280372 in words is "two hundred eighty thousand, three hundred seventy-two".