285270469 has 4 divisors (see below), whose sum is σ = 311204160. Its totient is φ = 259336780.

The previous prime is 285270467. The next prime is 285270493. The reversal of 285270469 is 964072582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 285270469 - 2¹ = 285270467 is a prime.

It is a super-2 number, since 2×285270469² = 162758480966959922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285270467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12966829 + ... + 12966850.

It is an arithmetic number, because the mean of its divisors is an integer number (77801040).

Almost surely, 2^285270469 is an apocalyptic number.

It is an amenable number.

285270469 is a deficient number, since it is larger than the sum of its proper divisors (25933691).

285270469 is a wasteful number, since it uses less digits than its factorization.

285270469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25933690.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 285270469 is about 16889.9517169233. The cubic root of 285270469 is about 658.2925478267.

The spelling of 285270469 in words is "two hundred eighty-five million, two hundred seventy thousand, four hundred sixty-nine".