285402000 has 160 divisors (see below), whose sum is σ = 991186560. Its totient is φ = 70233600.

The previous prime is 285401993. The next prime is 285402011. The reversal of 285402000 is 204582.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76171 + ... + 79829.

It is an arithmetic number, because the mean of its divisors is an integer number (6194916).

Almost surely, 2^285402000 is an apocalyptic number.

285402000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285402000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495593280).

285402000 is an abundant number, since it is smaller than the sum of its proper divisors (705784560).

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

285402000 is a wasteful number, since it uses less digits than its factorization.

285402000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698 (or 3682 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 285402000 is about 16893.8450330290. The cubic root of 285402000 is about 658.3937062972.

Adding to 285402000 its reverse (204582), we get a palindrome (285606582).

The spelling of 285402000 in words is "two hundred eighty-five million, four hundred two thousand".