280472 has 8 divisors (see below), whose sum is σ = 525900. Its totient is φ = 140232.

The previous prime is 280463. The next prime is 280487. The reversal of 280472 is 274082.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

280472 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17522 + ... + 17537.

2²⁸⁰⁴⁷² is an apocalyptic number.

It is an amenable number.

280472 is a deficient number, since it is larger than the sum of its proper divisors (245428).

280472 is a wasteful number, since it uses less digits than its factorization.

280472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35065 (or 35061 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 280472 is about 529.5960724930. The cubic root of 280472 is about 65.4580661219.

The spelling of 280472 in words is "two hundred eighty thousand, four hundred seventy-two".