28252796441 has 4 divisors (see below), whose sum is σ = 29016385572. Its totient is φ = 27489207312.

The previous prime is 28252796437. The next prime is 28252796459. The reversal of 28252796441 is 14469725282.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21666662416 + 6586134025 = 147196^2 + 81155^2 .

It is a cyclic number.

It is not a de Polignac number, because 28252796441 - 2² = 28252796437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28252796441.

It is not an unprimeable number, because it can be changed into a prime (28252790441) 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, 381794510 + ... + 381794583.

It is an arithmetic number, because the mean of its divisors is an integer number (7254096393).

Almost surely, 2^28252796441 is an apocalyptic number.

It is an amenable number.

28252796441 is a deficient number, since it is larger than the sum of its proper divisors (763589131).

28252796441 is an equidigital number, since it uses as much as digits as its factorization.

28252796441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763589130.

The product of its digits is 1935360, while the sum is 50.

The spelling of 28252796441 in words is "twenty-eight billion, two hundred fifty-two million, seven hundred ninety-six thousand, four hundred forty-one".