285760220 has 12 divisors (see below), whose sum is σ = 600096504. Its totient is φ = 114304080.

The previous prime is 285760151. The next prime is 285760243. The reversal of 285760220 is 22067582.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7143986 + ... + 7144025.

It is an arithmetic number, because the mean of its divisors is an integer number (50008042).

Almost surely, 2^285760220 is an apocalyptic number.

285760220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285760220 is an abundant number, since it is smaller than the sum of its proper divisors (314336284).

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

285760220 is a wasteful number, since it uses less digits than its factorization.

285760220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14288020 (or 14288018 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 285760220 is about 16904.4437944583. The cubic root of 285760220 is about 658.6690503000.

The spelling of 285760220 in words is "two hundred eighty-five million, seven hundred sixty thousand, two hundred twenty".