280432713 has 32 divisors (see below), whose sum is σ = 419696640. Its totient is φ = 165090240.

The previous prime is 280432709. The next prime is 280432729. The reversal of 280432713 is 317234082.

It is not a de Polignac number, because 280432713 - 2² = 280432709 is a prime.

It is not an unprimeable number, because it can be changed into a prime (280432783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324520 + ... + 325382.

It is an arithmetic number, because the mean of its divisors is an integer number (13115520).

Almost surely, 2^280432713 is an apocalyptic number.

It is an amenable number.

280432713 is a deficient number, since it is larger than the sum of its proper divisors (139263927).

280432713 is a wasteful number, since it uses less digits than its factorization.

280432713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 280432713 is about 16746.1253130388. The cubic root of 280432713 is about 654.5500964195.

Adding to 280432713 its reverse (317234082), we get a palindrome (597666795).

The spelling of 280432713 in words is "two hundred eighty million, four hundred thirty-two thousand, seven hundred thirteen".