28784153218 has 8 divisors (see below), whose sum is σ = 43189048080. Its totient is φ = 14387803860.

The previous prime is 28784153191. The next prime is 28784153231. The reversal of 28784153218 is 81235148782.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 2127948 + ... + 2141431.

It is an arithmetic number, because the mean of its divisors is an integer number (5398631010).

Almost surely, 2^28784153218 is an apocalyptic number.

28784153218 is a deficient number, since it is larger than the sum of its proper divisors (14404894862).

28784153218 is a wasteful number, since it uses less digits than its factorization.

28784153218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272752.

The product of its digits is 860160, while the sum is 49.

The spelling of 28784153218 in words is "twenty-eight billion, seven hundred eighty-four million, one hundred fifty-three thousand, two hundred eighteen".