285420748 has 12 divisors (see below), whose sum is σ = 504432432. Its totient is φ = 141297200.

The previous prime is 285420743. The next prime is 285420749. The reversal of 285420748 is 847024582.

It is a self number, because there is not a number n which added to its sum of digits gives 285420748.

It is not an unprimeable number, because it can be changed into a prime (285420743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352840 + ... + 353647.

It is an arithmetic number, because the mean of its divisors is an integer number (42036036).

Almost surely, 2^285420748 is an apocalyptic number.

It is an amenable number.

285420748 is a deficient number, since it is larger than the sum of its proper divisors (219011684).

285420748 is a wasteful number, since it uses less digits than its factorization.

285420748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706592 (or 706590 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 285420748 is about 16894.3999005588. The cubic root of 285420748 is about 658.4081225649.

The spelling of 285420748 in words is "two hundred eighty-five million, four hundred twenty thousand, seven hundred forty-eight".