284216390 has 8 divisors (see below), whose sum is σ = 511589520. Its totient is φ = 113686552.

The previous prime is 284216389. The next prime is 284216411. The reversal of 284216390 is 93612482.

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

It is a self number, because there is not a number n which added to its sum of digits gives 284216390.

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, 14210810 + ... + 14210829.

It is an arithmetic number, because the mean of its divisors is an integer number (63948690).

Almost surely, 2^284216390 is an apocalyptic number.

284216390 is a deficient number, since it is larger than the sum of its proper divisors (227373130).

284216390 is a wasteful number, since it uses less digits than its factorization.

284216390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28421646.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 284216390 is about 16858.7185159490. The cubic root of 284216390 is about 657.4807465917.

The spelling of 284216390 in words is "two hundred eighty-four million, two hundred sixteen thousand, three hundred ninety".