285125400 has 384 divisors, whose sum is σ = 1184448000. Its totient is φ = 61585920.

The previous prime is 285125369. The next prime is 285125429. The reversal of 285125400 is 4521582.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 718002 + ... + 718398.

It is an arithmetic number, because the mean of its divisors is an integer number (3084500).

Almost surely, 2^285125400 is an apocalyptic number.

285125400 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 285125400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592224000).

285125400 is an abundant number, since it is smaller than the sum of its proper divisors (899322600).

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

285125400 is a wasteful number, since it uses less digits than its factorization.

285125400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 285125400 is about 16885.6566351445. The cubic root of 285125400 is about 658.1809414222.

Adding to 285125400 its reverse (4521582), we get a palindrome (289646982).

The spelling of 285125400 in words is "two hundred eighty-five million, one hundred twenty-five thousand, four hundred".