280422879 has 16 divisors (see below), whose sum is σ = 408748800. Its totient is φ = 169594560.

The previous prime is 280422859. The next prime is 280422899. The reversal of 280422879 is 978224082.

It is an interprime number because it is at equal distance from previous prime (280422859) and next prime (280422899).

It is not a de Polignac number, because 280422879 - 2¹⁵ = 280390111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 280422879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280422809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7347 + ... + 24795.

It is an arithmetic number, because the mean of its divisors is an integer number (25546800).

Almost surely, 2^280422879 is an apocalyptic number.

280422879 is a deficient number, since it is larger than the sum of its proper divisors (128325921).

280422879 is a wasteful number, since it uses less digits than its factorization.

280422879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17950.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 280422879 is about 16745.8316903043. The cubic root of 280422879 is about 654.5424452425.

The spelling of 280422879 in words is "two hundred eighty million, four hundred twenty-two thousand, eight hundred seventy-nine".