285228017132 has 12 divisors (see below), whose sum is σ = 499999373160. Its totient is φ = 142371053376.

The previous prime is 285228017111. The next prime is 285228017177. The reversal of 285228017132 is 231710822582.

It is a self number, because there is not a number n which added to its sum of digits gives 285228017132.

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, 60736157 + ... + 60740852.

It is an arithmetic number, because the mean of its divisors is an integer number (41666614430).

Almost surely, 2^285228017132 is an apocalyptic number.

It is an amenable number.

285228017132 is a deficient number, since it is larger than the sum of its proper divisors (214771356028).

285228017132 is a wasteful number, since it uses less digits than its factorization.

285228017132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121477600 (or 121477598 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 285228017132 in words is "two hundred eighty-five billion, two hundred twenty-eight million, seventeen thousand, one hundred thirty-two".