28442803915 has 4 divisors (see below), whose sum is σ = 34131364704. Its totient is φ = 22754243128.

The previous prime is 28442803891. The next prime is 28442803919. The reversal of 28442803915 is 51930824482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28442803915 - 2³¹ = 26295320267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28442803919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2844280387 + ... + 2844280396.

It is an arithmetic number, because the mean of its divisors is an integer number (8532841176).

Almost surely, 2^28442803915 is an apocalyptic number.

28442803915 is a deficient number, since it is larger than the sum of its proper divisors (5688560789).

28442803915 is an equidigital number, since it uses as much as digits as its factorization.

28442803915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5688560788.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 28442803915 in words is "twenty-eight billion, four hundred forty-two million, eight hundred three thousand, nine hundred fifteen".