285233478 has 16 divisors (see below), whose sum is σ = 570654720. Its totient is φ = 95046536.

The previous prime is 285233467. The next prime is 285233521. The reversal of 285233478 is 874332582.

It is a congruent number.

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, 19003 + ... + 30521.

It is an arithmetic number, because the mean of its divisors is an integer number (35665920).

Almost surely, 2^285233478 is an apocalyptic number.

285233478 is an abundant number, since it is smaller than the sum of its proper divisors (285421242).

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

285233478 is a wasteful number, since it uses less digits than its factorization.

285233478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15651.

The product of its digits is 322560, while the sum is 42.

The square root of 285233478 is about 16888.8566220452. The cubic root of 285233478 is about 658.2640930152.

The spelling of 285233478 in words is "two hundred eighty-five million, two hundred thirty-three thousand, four hundred seventy-eight".