28042299723 has 4 divisors (see below), whose sum is σ = 37389732968. Its totient is φ = 18694866480.

The previous prime is 28042299647. The next prime is 28042299749. The reversal of 28042299723 is 32799224082.

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

It is not a de Polignac number, because 28042299723 - 2⁹ = 28042299211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28042299763) 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, 4673716618 + ... + 4673716623.

It is an arithmetic number, because the mean of its divisors is an integer number (9347433242).

Almost surely, 2^28042299723 is an apocalyptic number.

28042299723 is a deficient number, since it is larger than the sum of its proper divisors (9347433245).

28042299723 is an equidigital number, since it uses as much as digits as its factorization.

28042299723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9347433244.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 28042299723 in words is "twenty-eight billion, forty-two million, two hundred ninety-nine thousand, seven hundred twenty-three".