28216424139 has 8 divisors (see below), whose sum is σ = 37623698640. Its totient is φ = 18810049536.

The previous prime is 28216424129. The next prime is 28216424149. The reversal of 28216424139 is 93142461282.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28216424129) and next prime (28216424149).

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

It is not a de Polignac number, because 28216424139 - 2⁷ = 28216424011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28216424139.

It is not an unprimeable number, because it can be changed into a prime (28216424129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148054 + ... + 279915.

It is an arithmetic number, because the mean of its divisors is an integer number (4702962330).

Almost surely, 2^28216424139 is an apocalyptic number.

28216424139 is a deficient number, since it is larger than the sum of its proper divisors (9407274501).

28216424139 is a wasteful number, since it uses less digits than its factorization.

28216424139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449949.

The product of its digits is 165888, while the sum is 42.

The spelling of 28216424139 in words is "twenty-eight billion, two hundred sixteen million, four hundred twenty-four thousand, one hundred thirty-nine".