280948 has 6 divisors (see below), whose sum is σ = 491666. Its totient is φ = 140472.

The previous prime is 280939. The next prime is 280949. The reversal of 280948 is 849082.

It can be written as a sum of positive squares in only one way, i.e., 272484 + 8464 = 522^2 + 92^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35115 + ... + 35122.

2²⁸⁰⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

280948 is a deficient number, since it is larger than the sum of its proper divisors (210718).

280948 is a wasteful number, since it uses less digits than its factorization.

280948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70241 (or 70239 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 280948 is about 530.0452810846. The cubic root of 280948 is about 65.4950756743.

The spelling of 280948 in words is "two hundred eighty thousand, nine hundred forty-eight".