285220441 has 8 divisors (see below), whose sum is σ = 329452704. Its totient is φ = 244038720.

The previous prime is 285220421. The next prime is 285220451. The reversal of 285220441 is 144022582.

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 285220441 - 2¹⁷ = 285089369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285220421) 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, 762435 + ... + 762808.

It is an arithmetic number, because the mean of its divisors is an integer number (41181588).

Almost surely, 2^285220441 is an apocalyptic number.

It is an amenable number.

285220441 is a deficient number, since it is larger than the sum of its proper divisors (44232263).

285220441 is a wasteful number, since it uses less digits than its factorization.

285220441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525271.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 285220441 is about 16888.4706530816. The cubic root of 285220441 is about 658.2540638983.

The spelling of 285220441 in words is "two hundred eighty-five million, two hundred twenty thousand, four hundred forty-one".