285001898 has 8 divisors (see below), whose sum is σ = 439057092. Its totient is φ = 138649536.

The previous prime is 285001891. The next prime is 285001903. The reversal of 285001898 is 898100582.

It can be written as a sum of positive squares in 2 ways, for example, as 280663009 + 4338889 = 16753^2 + 2083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (285001891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925615 + ... + 1925762.

Almost surely, 2^285001898 is an apocalyptic number.

285001898 is a deficient number, since it is larger than the sum of its proper divisors (154055194).

285001898 is a wasteful number, since it uses less digits than its factorization.

285001898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851416.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 285001898 is about 16881.9992299490. Note that the first 3 decimals coincide. The cubic root of 285001898 is about 658.0858973914.

The spelling of 285001898 in words is "two hundred eighty-five million, one thousand, eight hundred ninety-eight".