285573645 has 48 divisors (see below), whose sum is σ = 577774080. Its totient is φ = 127763712.

The previous prime is 285573637. The next prime is 285573647. The reversal of 285573645 is 546375582.

285573645 is a `hidden beast` number, since 28 + 557 + 36 + 45 = 666.

It is not a de Polignac number, because 285573645 - 2³ = 285573637 is a prime.

It is a super-3 number, since 3×285573645³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 285573645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285573647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5161 + ... + 24449.

It is an arithmetic number, because the mean of its divisors is an integer number (12036960).

Almost surely, 2^285573645 is an apocalyptic number.

It is an amenable number.

285573645 is an abundant number, since it is smaller than the sum of its proper divisors (292200435).

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

285573645 is a wasteful number, since it uses less digits than its factorization.

285573645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19354 (or 19351 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 285573645 is about 16898.9243740541. The cubic root of 285573645 is about 658.5256690959.

The spelling of 285573645 in words is "two hundred eighty-five million, five hundred seventy-three thousand, six hundred forty-five".