285980772 has 48 divisors (see below), whose sum is σ = 831946752. Its totient is φ = 74280480.

The previous prime is 285980767. The next prime is 285980819. The reversal of 285980772 is 277089582.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153828 + ... + 155675.

It is an arithmetic number, because the mean of its divisors is an integer number (17332224).

Almost surely, 2^285980772 is an apocalyptic number.

285980772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

285980772 is an abundant number, since it is smaller than the sum of its proper divisors (545965980).

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

285980772 is a wasteful number, since it uses less digits than its factorization.

285980772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309528 (or 309526 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 285980772 is about 16910.9660279950. The cubic root of 285980772 is about 658.8384620521.

The spelling of 285980772 in words is "two hundred eighty-five million, nine hundred eighty thousand, seven hundred seventy-two".