285171968 has 18 divisors (see below), whose sum is σ = 569230494. Its totient is φ = 142585856.

The previous prime is 285171961. The next prime is 285172003. The reversal of 285171968 is 869171582.

It can be written as a sum of positive squares in only one way, i.e., 201412864 + 83759104 = 14192^2 + 9152^2 .

It is not an unprimeable number, because it can be changed into a prime (285171961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556721 + ... + 557232.

Almost surely, 2^285171968 is an apocalyptic number.

It is an amenable number.

285171968 is a deficient number, since it is larger than the sum of its proper divisors (284058526).

285171968 is an equidigital number, since it uses as much as digits as its factorization.

285171968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113969 (or 1113955 counting only the distinct ones).

The product of its digits is 241920, while the sum is 47.

The square root of 285171968 is about 16887.0355006437. The cubic root of 285171968 is about 658.2167718575.

The spelling of 285171968 in words is "two hundred eighty-five million, one hundred seventy-one thousand, nine hundred sixty-eight".