285034720 has 24 divisors (see below), whose sum is σ = 673394904. Its totient is φ = 114013824.

The previous prime is 285034709. The next prime is 285034753. The reversal of 285034720 is 27430582.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890574 + ... + 890893.

It is an arithmetic number, because the mean of its divisors is an integer number (28058121).

Almost surely, 2^285034720 is an apocalyptic number.

285034720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285034720 is an abundant number, since it is smaller than the sum of its proper divisors (388360184).

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

285034720 is a wasteful number, since it uses less digits than its factorization.

285034720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781482 (or 1781474 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 285034720 is about 16882.9713024692. The cubic root of 285034720 is about 658.1111590550. Note that the first 4 decimals are identical.

The spelling of 285034720 in words is "two hundred eighty-five million, thirty-four thousand, seven hundred twenty".