280105083 has 12 divisors (see below), whose sum is σ = 405727920. Its totient is φ = 186214416.

The previous prime is 280105081. The next prime is 280105097. The reversal of 280105083 is 380501082.

It is a happy number.

It is not a de Polignac number, because 280105083 - 2¹ = 280105081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (280105081) 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, 40116 + ... + 46577.

It is an arithmetic number, because the mean of its divisors is an integer number (33810660).

Almost surely, 2^280105083 is an apocalyptic number.

280105083 is a deficient number, since it is larger than the sum of its proper divisors (125622837).

280105083 is a wasteful number, since it uses less digits than its factorization.

280105083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87058 (or 87055 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 280105083 is about 16736.3401913322. The cubic root of 280105083 is about 654.2950931019.

The spelling of 280105083 in words is "two hundred eighty million, one hundred five thousand, eighty-three".