28068207434 has 8 divisors (see below), whose sum is σ = 42185028420. Its totient is φ = 14006531296.

The previous prime is 28068207373. The next prime is 28068207439. The reversal of 28068207434 is 43470286082.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27813900625 + 254306809 = 166775^2 + 15947^2 .

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 (28068207439) 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, 13784939 + ... + 13786974.

Almost surely, 2^28068207434 is an apocalyptic number.

28068207434 is a deficient number, since it is larger than the sum of its proper divisors (14116820986).

28068207434 is a wasteful number, since it uses less digits than its factorization.

28068207434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27572424.

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 28068207434 in words is "twenty-eight billion, sixty-eight million, two hundred seven thousand, four hundred thirty-four".