285330400 has 36 divisors (see below), whose sum is σ = 696564792. Its totient is φ = 114131840.

The previous prime is 285330377. The next prime is 285330401. The reversal of 285330400 is 4033582.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285330401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177532 + ... + 179131.

It is an arithmetic number, because the mean of its divisors is an integer number (19349022).

Almost surely, 2^285330400 is an apocalyptic number.

285330400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285330400 is an abundant number, since it is smaller than the sum of its proper divisors (411234392).

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

285330400 is a wasteful number, since it uses less digits than its factorization.

285330400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356683 (or 356670 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 285330400 is about 16891.7257851292. The cubic root of 285330400 is about 658.3386436930.

Adding to 285330400 its reverse (4033582), we get a palindrome (289363982).

The spelling of 285330400 in words is "two hundred eighty-five million, three hundred thirty thousand, four hundred".