280224245 has 16 divisors (see below), whose sum is σ = 397560960. Its totient is φ = 185527104.

The previous prime is 280224239. The next prime is 280224251. The reversal of 280224245 is 542422082.

It is an interprime number because it is at equal distance from previous prime (280224239) and next prime (280224251).

It is not a de Polignac number, because 280224245 - 2⁴ = 280224229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137027 + ... + 139056.

It is an arithmetic number, because the mean of its divisors is an integer number (24847560).

Almost surely, 2^280224245 is an apocalyptic number.

It is an amenable number.

280224245 is a deficient number, since it is larger than the sum of its proper divisors (117336715).

280224245 is a wasteful number, since it uses less digits than its factorization.

280224245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276124.

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 280224245 is about 16739.8997906200. The cubic root of 280224245 is about 654.3878631169.

The spelling of 280224245 in words is "two hundred eighty million, two hundred twenty-four thousand, two hundred forty-five".