285255400 has 24 divisors (see below), whose sum is σ = 663219270. Its totient is φ = 114102080.

The previous prime is 285255389. The next prime is 285255403. The reversal of 285255400 is 4552582.

It can be written as a sum of positive squares in 3 ways, for example, as 206152164 + 79103236 = 14358^2 + 8894^2 .

It is not an unprimeable number, because it can be changed into a prime (285255403) 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, 712939 + ... + 713338.

Almost surely, 2^285255400 is an apocalyptic number.

285255400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285255400 is an abundant number, since it is smaller than the sum of its proper divisors (377963870).

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

285255400 is a wasteful number, since it uses less digits than its factorization.

285255400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426293 (or 1426284 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 285255400 is about 16889.5056173945. The cubic root of 285255400 is about 658.2809565053.

The spelling of 285255400 in words is "two hundred eighty-five million, two hundred fifty-five thousand, four hundred".