28424381915 has 8 divisors (see below), whose sum is σ = 34687381680. Its totient is φ = 22354089952.

The previous prime is 28424381911. The next prime is 28424381959. The reversal of 28424381915 is 51918342482.

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

It is a cyclic number.

It is not a de Polignac number, because 28424381915 - 2² = 28424381911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28424381915.

It is not an unprimeable number, because it can be changed into a prime (28424381911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48176624 + ... + 48177213.

It is an arithmetic number, because the mean of its divisors is an integer number (4335922710).

Almost surely, 2^28424381915 is an apocalyptic number.

28424381915 is a deficient number, since it is larger than the sum of its proper divisors (6262999765).

28424381915 is an equidigital number, since it uses as much as digits as its factorization.

28424381915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96353901.

The product of its digits is 552960, while the sum is 47.

The spelling of 28424381915 in words is "twenty-eight billion, four hundred twenty-four million, three hundred eighty-one thousand, nine hundred fifteen".