285284100 has 36 divisors (see below), whose sum is σ = 825422864. Its totient is φ = 76075680.

The previous prime is 285284053. The next prime is 285284119. The reversal of 285284100 is 1482582.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475174 + ... + 475773.

Almost surely, 2^285284100 is an apocalyptic number.

285284100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285284100 is an abundant number, since it is smaller than the sum of its proper divisors (540138764).

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

285284100 is a wasteful number, since it uses less digits than its factorization.

285284100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950964 (or 950957 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 285284100 is about 16890.3552360511. The cubic root of 285284100 is about 658.3030326633.

The spelling of 285284100 in words is "two hundred eighty-five million, two hundred eighty-four thousand, one hundred".