285243402 has 16 divisors (see below), whose sum is σ = 570702240. Its totient is φ = 95045232.

The previous prime is 285243377. The next prime is 285243443. The reversal of 285243402 is 204342582.

It is a self number, because there is not a number n which added to its sum of digits gives 285243402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12013 + ... + 26735.

It is an arithmetic number, because the mean of its divisors is an integer number (35668890).

Almost surely, 2^285243402 is an apocalyptic number.

285243402 is an abundant number, since it is smaller than the sum of its proper divisors (285458838).

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

285243402 is a wasteful number, since it uses less digits than its factorization.

285243402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17957.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 285243402 is about 16889.1504226826. The cubic root of 285243402 is about 658.2717271554.

Adding to 285243402 its reverse (204342582), we get a palindrome (489585984).

The spelling of 285243402 in words is "two hundred eighty-five million, two hundred forty-three thousand, four hundred two".