284438402 has 16 divisors (see below), whose sum is σ = 440946072. Its totient is φ = 137518080.

The previous prime is 284438389. The next prime is 284438411. The reversal of 284438402 is 204834482.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29365561 + 255072841 = 5419^2 + 15971^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6083 + ... + 24614.

Almost surely, 2^284438402 is an apocalyptic number.

284438402 is a deficient number, since it is larger than the sum of its proper divisors (156507670).

284438402 is a wasteful number, since it uses less digits than its factorization.

284438402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30853.

The product of its (nonzero) digits is 49152, while the sum is 35.

The square root of 284438402 is about 16865.3017168386. The cubic root of 284438402 is about 657.6518962626.

The spelling of 284438402 in words is "two hundred eighty-four million, four hundred thirty-eight thousand, four hundred two".