285245020 has 12 divisors (see below), whose sum is σ = 599014584. Its totient is φ = 114098000.

The previous prime is 285245017. The next prime is 285245027. The reversal of 285245020 is 20542582.

It is a self number, because there is not a number n which added to its sum of digits gives 285245020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285245027) 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, 7131106 + ... + 7131145.

It is an arithmetic number, because the mean of its divisors is an integer number (49917882).

Almost surely, 2^285245020 is an apocalyptic number.

285245020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285245020 is an abundant number, since it is smaller than the sum of its proper divisors (313769564).

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

285245020 is a wasteful number, since it uses less digits than its factorization.

285245020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14262260 (or 14262258 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 285245020 is about 16889.1983231887. The cubic root of 285245020 is about 658.2729718020.

The spelling of 285245020 in words is "two hundred eighty-five million, two hundred forty-five thousand, twenty".