280465076 has 12 divisors (see below), whose sum is σ = 493557120. Its totient is φ = 139448760.

The previous prime is 280465067. The next prime is 280465079. The reversal of 280465076 is 670564082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280465079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195140 + ... + 196571.

It is an arithmetic number, because the mean of its divisors is an integer number (41129760).

Almost surely, 2^280465076 is an apocalyptic number.

It is an amenable number.

280465076 is a deficient number, since it is larger than the sum of its proper divisors (213092044).

280465076 is a wasteful number, since it uses less digits than its factorization.

280465076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391894 (or 391892 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 280465076 is about 16747.0915683888. The cubic root of 280465076 is about 654.5752746398.

The spelling of 280465076 in words is "two hundred eighty million, four hundred sixty-five thousand, seventy-six".