280112945 has 8 divisors (see below), whose sum is σ = 384154944. Its totient is φ = 192077424.

The previous prime is 280112933. The next prime is 280112969. The reversal of 280112945 is 549211082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 280112945 - 2⁶ = 280112881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4001579 + ... + 4001648.

It is an arithmetic number, because the mean of its divisors is an integer number (48019368).

Almost surely, 2^280112945 is an apocalyptic number.

It is an amenable number.

280112945 is a deficient number, since it is larger than the sum of its proper divisors (104041999).

280112945 is an equidigital number, since it uses as much as digits as its factorization.

280112945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8003239.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 280112945 is about 16736.5750677969. The cubic root of 280112945 is about 654.3012146377.

The spelling of 280112945 in words is "two hundred eighty million, one hundred twelve thousand, nine hundred forty-five".