285479772 has 48 divisors (see below), whose sum is σ = 703933440. Its totient is φ = 89863488.

The previous prime is 285479743. The next prime is 285479773. The reversal of 285479772 is 277974582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285479773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15258 + ... + 28350.

It is an arithmetic number, because the mean of its divisors is an integer number (14665280).

Almost surely, 2^285479772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285479772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351966720).

285479772 is an abundant number, since it is smaller than the sum of its proper divisors (418453668).

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

285479772 is a wasteful number, since it uses less digits than its factorization.

285479772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13202 (or 13200 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 51.

The square root of 285479772 is about 16896.1466612953. The cubic root of 285479772 is about 658.4535049262.

The spelling of 285479772 in words is "two hundred eighty-five million, four hundred seventy-nine thousand, seven hundred seventy-two".