280980867 has 16 divisors (see below), whose sum is σ = 382295808. Its totient is φ = 183526560.

The previous prime is 280980853. The next prime is 280980871. The reversal of 280980867 is 768089082.

It is a happy number.

It is not a de Polignac number, because 280980867 - 2⁴ = 280980851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (280980067) 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, 30673 + ... + 38765.

It is an arithmetic number, because the mean of its divisors is an integer number (23893488).

Almost surely, 2^280980867 is an apocalyptic number.

280980867 is a deficient number, since it is larger than the sum of its proper divisors (101314941).

280980867 is a wasteful number, since it uses less digits than its factorization.

280980867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8330.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 280980867 is about 16762.4839149811. The cubic root of 280980867 is about 654.9762957838.

The spelling of 280980867 in words is "two hundred eighty million, nine hundred eighty thousand, eight hundred sixty-seven".