280085133 has 8 divisors (see below), whose sum is σ = 373540608. Its totient is φ = 186676544.

The previous prime is 280085089. The next prime is 280085147. The reversal of 280085133 is 331580082.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 280085133 - 2¹⁴ = 280068749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 280085133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280089133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6085 + ... + 24437.

It is an arithmetic number, because the mean of its divisors is an integer number (46692576).

Almost surely, 2^280085133 is an apocalyptic number.

It is an amenable number.

280085133 is a deficient number, since it is larger than the sum of its proper divisors (93455475).

280085133 is a wasteful number, since it uses less digits than its factorization.

280085133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23443.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 280085133 is about 16735.7441722799. The cubic root of 280085133 is about 654.2795590543.

The spelling of 280085133 in words is "two hundred eighty million, eighty-five thousand, one hundred thirty-three".