280000679 has 8 divisors (see below), whose sum is σ = 320278560. Its totient is φ = 239792256.

The previous prime is 280000661. The next prime is 280000691. The reversal of 280000679 is 976000082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 280000679 - 2¹² = 279996583 is a prime.

It is a super-2 number, since 2×280000679² = 156800760480922082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280000619) 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 7 ways as a sum of consecutive naturals, for example, 8414 + ... + 25115.

It is an arithmetic number, because the mean of its divisors is an integer number (40034820).

Almost surely, 2^280000679 is an apocalyptic number.

280000679 is a deficient number, since it is larger than the sum of its proper divisors (40277881).

280000679 is a wasteful number, since it uses less digits than its factorization.

280000679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34729.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 280000679 is about 16733.2208196749. The cubic root of 280000679 is about 654.2137908597.

The spelling of 280000679 in words is "two hundred eighty million, six hundred seventy-nine", and thus it is an aban number.