285025988 has 24 divisors (see below), whose sum is σ = 538543320. Its totient is φ = 131212800.

The previous prime is 285025981. The next prime is 285025999. The reversal of 285025988 is 889520582.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 110838784 + 174187204 = 10528^2 + 13198^2 .

It is a super-2 number, since 2×285025988² = 162479627670752288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (285025981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14018 + ... + 27686.

It is an arithmetic number, because the mean of its divisors is an integer number (22439305).

Almost surely, 2^285025988 is an apocalyptic number.

It is an amenable number.

285025988 is a deficient number, since it is larger than the sum of its proper divisors (253517332).

285025988 is a wasteful number, since it uses less digits than its factorization.

285025988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14087 (or 14085 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 47.

The square root of 285025988 is about 16882.7126967203. The cubic root of 285025988 is about 658.1044386043.

The spelling of 285025988 in words is "two hundred eighty-five million, twenty-five thousand, nine hundred eighty-eight".