285420750 has 64 divisors (see below), whose sum is σ = 715613184. Its totient is φ = 75770400.

The previous prime is 285420749. The next prime is 285420757. The reversal of 285420750 is 57024582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285420757) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196527 + ... + 197973.

It is an arithmetic number, because the mean of its divisors is an integer number (11181456).

Almost surely, 2^285420750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285420750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357806592).

285420750 is an abundant number, since it is smaller than the sum of its proper divisors (430192434).

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

285420750 is a wasteful number, since it uses less digits than its factorization.

285420750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 1720 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 285420750 is about 16894.3999597500. The cubic root of 285420750 is about 658.4081241028.

The spelling of 285420750 in words is "two hundred eighty-five million, four hundred twenty thousand, seven hundred fifty".