285090417 has 6 divisors (see below), whose sum is σ = 411797282. Its totient is φ = 190060272.

The previous prime is 285090413. The next prime is 285090431. The reversal of 285090417 is 714090582.

It can be written as a sum of positive squares in only one way, i.e., 273042576 + 12047841 = 16524^2 + 3471^2 .

It is not a de Polignac number, because 285090417 - 2² = 285090413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285090413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15838348 + ... + 15838365.

Almost surely, 2^285090417 is an apocalyptic number.

It is an amenable number.

285090417 is a deficient number, since it is larger than the sum of its proper divisors (126706865).

285090417 is a wasteful number, since it uses less digits than its factorization.

285090417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31676719 (or 31676716 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 285090417 is about 16884.6207241975. The cubic root of 285090417 is about 658.1540221723.

The spelling of 285090417 in words is "two hundred eighty-five million, ninety thousand, four hundred seventeen".