280713990 has 32 divisors (see below), whose sum is σ = 695448576. Its totient is φ = 72442080.

The previous prime is 280713989. The next prime is 280713991. The reversal of 280713990 is 99317082.

280713990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (280713989) and next prime (280713991).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280713991) 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, 149992 + ... + 151851.

It is an arithmetic number, because the mean of its divisors is an integer number (21732768).

Almost surely, 2^280713990 is an apocalyptic number.

280713990 is an abundant number, since it is smaller than the sum of its proper divisors (414734586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

280713990 is a wasteful number, since it uses less digits than its factorization.

280713990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301884.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 280713990 is about 16754.5214792903. The cubic root of 280713990 is about 654.7688635348.

The spelling of 280713990 in words is "two hundred eighty million, seven hundred thirteen thousand, nine hundred ninety".