280261233 has 36 divisors (see below), whose sum is σ = 491407488. Its totient is φ = 153180720.

The previous prime is 280261231. The next prime is 280261253. The reversal of 280261233 is 332162082.

It is not a de Polignac number, because 280261233 - 2¹ = 280261231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 280261197 and 280261206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280261231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3673 + ... + 23958.

It is an arithmetic number, because the mean of its divisors is an integer number (13650208).

Almost surely, 2^280261233 is an apocalyptic number.

280261233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

280261233 is a deficient number, since it is larger than the sum of its proper divisors (211146255).

280261233 is a wasteful number, since it uses less digits than its factorization.

280261233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27674 (or 27664 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 280261233 is about 16741.0045397521. The cubic root of 280261233 is about 654.4166536704.

The spelling of 280261233 in words is "two hundred eighty million, two hundred sixty-one thousand, two hundred thirty-three".