280836983 has 12 divisors (see below), whose sum is σ = 332854920. Its totient is φ = 236173392.

The previous prime is 280836977. The next prime is 280836989. The reversal of 280836983 is 389638082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (280836977) and next prime (280836989).

It is not a de Polignac number, because 280836983 - 2¹⁰ = 280835959 is a prime.

It is a super-2 number, since 2×280836983² = 157738822041084578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280836989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51473 + ... + 56666.

It is an arithmetic number, because the mean of its divisors is an integer number (27737910).

Almost surely, 2^280836983 is an apocalyptic number.

280836983 is a deficient number, since it is larger than the sum of its proper divisors (52017937).

280836983 is a wasteful number, since it uses less digits than its factorization.

280836983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108206 (or 108199 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 280836983 is about 16758.1915193734. The cubic root of 280836983 is about 654.8644771380.

The spelling of 280836983 in words is "two hundred eighty million, eight hundred thirty-six thousand, nine hundred eighty-three".