284578423 has 2 divisors, whose sum is σ = 284578424. Its totient is φ = 284578422.

The previous prime is 284578403. The next prime is 284578451. The reversal of 284578423 is 324875482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 284578423 - 2²¹ = 282481271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 284578423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284578403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142289211 + 142289212.

It is an arithmetic number, because the mean of its divisors is an integer number (142289212).

Almost surely, 2^284578423 is an apocalyptic number.

284578423 is a deficient number, since it is larger than the sum of its proper divisors (1).

284578423 is an equidigital number, since it uses as much as digits as its factorization.

284578423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 430080, while the sum is 43.

The square root of 284578423 is about 16869.4523621841. The cubic root of 284578423 is about 657.7597930508.

The spelling of 284578423 in words is "two hundred eighty-four million, five hundred seventy-eight thousand, four hundred twenty-three".