284238478 has 8 divisors (see below), whose sum is σ = 427279968. Its totient is φ = 141811824.

The previous prime is 284238443. The next prime is 284238497. The reversal of 284238478 is 874832482.

284238478 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152551 + ... + 154402.

It is an arithmetic number, because the mean of its divisors is an integer number (53409996).

Almost surely, 2^284238478 is an apocalyptic number.

284238478 is a deficient number, since it is larger than the sum of its proper divisors (143041490).

284238478 is a wasteful number, since it uses less digits than its factorization.

284238478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307418.

The product of its digits is 688128, while the sum is 46.

The square root of 284238478 is about 16859.3735945319. The cubic root of 284238478 is about 657.4977782843.

The spelling of 284238478 in words is "two hundred eighty-four million, two hundred thirty-eight thousand, four hundred seventy-eight".