280478995 has 16 divisors (see below), whose sum is σ = 343701792. Its totient is φ = 219681280.

The previous prime is 280478983. The next prime is 280479013. The reversal of 280478995 is 599874082.

It is not a de Polignac number, because 280478995 - 2²¹ = 278381843 is a prime.

It is a Duffinian 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, 43905 + ... + 49885.

It is an arithmetic number, because the mean of its divisors is an integer number (21481362).

Almost surely, 2^280478995 is an apocalyptic number.

280478995 is a deficient number, since it is larger than the sum of its proper divisors (63222797).

280478995 is a wasteful number, since it uses less digits than its factorization.

280478995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6182.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 280478995 is about 16747.5071279280. The cubic root of 280478995 is about 654.5861029429.

The spelling of 280478995 in words is "two hundred eighty million, four hundred seventy-eight thousand, nine hundred ninety-five".