285306402 has 16 divisors (see below), whose sum is σ = 571381632. Its totient is φ = 94974000.

The previous prime is 285306397. The next prime is 285306407. The reversal of 285306402 is 204603582.

It is an interprime number because it is at equal distance from previous prime (285306397) and next prime (285306407).

It is a self number, because there is not a number n which added to its sum of digits gives 285306402.

It is not an unprimeable number, because it can be changed into a prime (285306407) 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, 27153 + ... + 36164.

It is an arithmetic number, because the mean of its divisors is an integer number (35711352).

Almost surely, 2^285306402 is an apocalyptic number.

285306402 is an abundant number, since it is smaller than the sum of its proper divisors (286075230).

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

285306402 is a wasteful number, since it uses less digits than its factorization.

285306402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64073.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 285306402 is about 16891.0154224073. The cubic root of 285306402 is about 658.3201864312.

Adding to 285306402 its reverse (204603582), we get a palindrome (489909984).

The spelling of 285306402 in words is "two hundred eighty-five million, three hundred six thousand, four hundred two".