28405252235 has 8 divisors (see below), whose sum is σ = 34141912080. Its totient is φ = 22687128864.

The previous prime is 28405252219. The next prime is 28405252237. The reversal of 28405252235 is 53225250482.

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 28405252235 - 2⁴ = 28405252219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28405252237) 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, 4630745 + ... + 4636874.

It is an arithmetic number, because the mean of its divisors is an integer number (4267739010).

Almost surely, 2^28405252235 is an apocalyptic number.

28405252235 is a deficient number, since it is larger than the sum of its proper divisors (5736659845).

28405252235 is an equidigital number, since it uses as much as digits as its factorization.

28405252235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9268237.

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 28405252235 in words is "twenty-eight billion, four hundred five million, two hundred fifty-two thousand, two hundred thirty-five".