28055834434 has 8 divisors (see below), whose sum is σ = 44559266508. Its totient is φ = 13202745600.

The previous prime is 28055834431. The next prime is 28055834441. The reversal of 28055834434 is 43443855082.

It can be written as a sum of positive squares in 2 ways, for example, as 28040507209 + 15327225 = 167453^2 + 3915^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28055834431) 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, 412585767 + ... + 412585834.

Almost surely, 2^28055834434 is an apocalyptic number.

28055834434 is a deficient number, since it is larger than the sum of its proper divisors (16503432074).

28055834434 is a wasteful number, since it uses less digits than its factorization.

28055834434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825171620.

The product of its (nonzero) digits is 1843200, while the sum is 46.

The spelling of 28055834434 in words is "twenty-eight billion, fifty-five million, eight hundred thirty-four thousand, four hundred thirty-four".