28238697043 has 4 divisors (see below), whose sum is σ = 28272761440. Its totient is φ = 28204632648.

The previous prime is 28238697023. The next prime is 28238697131. The reversal of 28238697043 is 34079683282.

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 28238697043 - 2¹³ = 28238688851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28238697013) 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, 17030955 + ... + 17032612.

It is an arithmetic number, because the mean of its divisors is an integer number (7068190360).

Almost surely, 2^28238697043 is an apocalyptic number.

28238697043 is a deficient number, since it is larger than the sum of its proper divisors (34064397).

28238697043 is an equidigital number, since it uses as much as digits as its factorization.

28238697043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34064396.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 28238697043 in words is "twenty-eight billion, two hundred thirty-eight million, six hundred ninety-seven thousand, forty-three".