280055442 has 32 divisors (see below), whose sum is σ = 577930752. Its totient is φ = 90405504.

The previous prime is 280055437. The next prime is 280055449. The reversal of 280055442 is 244550082.

It is not an unprimeable number, because it can be changed into a prime (280055449) 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, 46678 + ... + 52334.

It is an arithmetic number, because the mean of its divisors is an integer number (18060336).

Almost surely, 2^280055442 is an apocalyptic number.

280055442 is an abundant number, since it is smaller than the sum of its proper divisors (297875310).

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

280055442 is a wasteful number, since it uses less digits than its factorization.

280055442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922.

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 280055442 is about 16734.8570952966. The cubic root of 280055442 is about 654.2564388210.

The spelling of 280055442 in words is "two hundred eighty million, fifty-five thousand, four hundred forty-two".