285715000 has 40 divisors (see below), whose sum is σ = 669441960. Its totient is φ = 114284000.

The previous prime is 285714991. The next prime is 285715013. The reversal of 285715000 is 517582.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×285715000² = 163266122450000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 285715000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23572 + ... + 33571.

It is an arithmetic number, because the mean of its divisors is an integer number (16736049).

Almost surely, 2^285715000 is an apocalyptic number.

285715000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285715000 is an abundant number, since it is smaller than the sum of its proper divisors (383726960).

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

285715000 is an equidigital number, since it uses as much as digits as its factorization.

285715000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57169 (or 57150 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 285715000 is about 16903.1062234135. The cubic root of 285715000 is about 658.6343048694.

The spelling of 285715000 in words is "two hundred eighty-five million, seven hundred fifteen thousand".