28284578146 has 16 divisors (see below), whose sum is σ = 47534771520. Its totient is φ = 12509149680.

The previous prime is 28284578131. The next prime is 28284578167. The reversal of 28284578146 is 64187548282.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17373006 + ... + 17374633.

It is an arithmetic number, because the mean of its divisors is an integer number (2970923220).

Almost surely, 2^28284578146 is an apocalyptic number.

28284578146 is a deficient number, since it is larger than the sum of its proper divisors (19250193374).

28284578146 is a wasteful number, since it uses less digits than its factorization.

28284578146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34747689.

The product of its digits is 6881280, while the sum is 55.

The spelling of 28284578146 in words is "twenty-eight billion, two hundred eighty-four million, five hundred seventy-eight thousand, one hundred forty-six".