28042369253 has 4 divisors (see below), whose sum is σ = 28042856268. Its totient is φ = 28041882240.

The previous prime is 28042369241. The next prime is 28042369259. The reversal of 28042369253 is 35296324082.

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 12642303844 + 15400065409 = 112438^2 + 124097^2 .

It is a cyclic number.

It is not a de Polignac number, because 28042369253 - 2⁸ = 28042368997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28042369259) 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, 143426 + ... + 276867.

It is an arithmetic number, because the mean of its divisors is an integer number (7010714067).

Almost surely, 2^28042369253 is an apocalyptic number.

It is an amenable number.

28042369253 is a deficient number, since it is larger than the sum of its proper divisors (487015).

28042369253 is an equidigital number, since it uses as much as digits as its factorization.

28042369253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487014.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 28042369253 in words is "twenty-eight billion, forty-two million, three hundred sixty-nine thousand, two hundred fifty-three".