280995242 has 32 divisors (see below), whose sum is σ = 476720640. Its totient is φ = 123094080.

The previous prime is 280995203. The next prime is 280995251. The reversal of 280995242 is 242599082.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 280995242.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87143 + ... + 90309.

It is an arithmetic number, because the mean of its divisors is an integer number (14897520).

Almost surely, 2^280995242 is an apocalyptic number.

280995242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

280995242 is a deficient number, since it is larger than the sum of its proper divisors (195725398).

280995242 is a wasteful number, since it uses less digits than its factorization.

280995242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 280995242 is about 16762.9126943977. The cubic root of 280995242 is about 654.9874651370.

The spelling of 280995242 in words is "two hundred eighty million, nine hundred ninety-five thousand, two hundred forty-two".