284374305 has 12 divisors (see below), whose sum is σ = 492915540. Its totient is φ = 151666272.

The previous prime is 284374303. The next prime is 284374327. The reversal of 284374305 is 503473482.

It is a happy number.

284374305 is a `hidden beast` number, since 284 + 3 + 74 + 305 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 153660816 + 130713489 = 12396^2 + 11433^2 .

It is not a de Polignac number, because 284374305 - 2¹ = 284374303 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 284374305.

It is not an unprimeable number, because it can be changed into a prime (284374301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3159670 + ... + 3159759.

It is an arithmetic number, because the mean of its divisors is an integer number (41076295).

Almost surely, 2^284374305 is an apocalyptic number.

It is an amenable number.

284374305 is a deficient number, since it is larger than the sum of its proper divisors (208541235).

284374305 is a wasteful number, since it uses less digits than its factorization.

284374305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6319440 (or 6319437 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 284374305 is about 16863.4013472965. The cubic root of 284374305 is about 657.6024928533.

The spelling of 284374305 in words is "two hundred eighty-four million, three hundred seventy-four thousand, three hundred five".