285227490240 has 1792 divisors, whose sum is σ = 1305265766400. Its totient is φ = 57644421120.

The previous prime is 285227490199. The next prime is 285227490241. The reversal of 285227490240 is 42094722582.

285227490240 is a `hidden beast` number, since 2 + 8 + 52 + 274 + 90 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285227490241) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 3610474521 + ... + 3610474599.

Almost surely, 2^285227490240 is an apocalyptic number.

285227490240 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 285227490240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652632883200).

285227490240 is an abundant number, since it is smaller than the sum of its proper divisors (1020038276160).

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

285227490240 is an equidigital number, since it uses as much as digits as its factorization.

285227490240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 285227490240 in words is "two hundred eighty-five billion, two hundred twenty-seven million, four hundred ninety thousand, two hundred forty".