28338118087234 has 4 divisors (see below), whose sum is σ = 42507177130854. Its totient is φ = 14169059043616.

The previous prime is 28338118087231. The next prime is 28338118087249. The reversal of 28338118087234 is 43278081183382.

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

It can be written as a sum of positive squares in only one way, i.e., 22932097830009 + 5406020257225 = 4788747^2 + 2325085^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28338118087231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7084529521807 + ... + 7084529521810.

Almost surely, 2^{28338118087234} is an apocalyptic number.

28338118087234 is a deficient number, since it is larger than the sum of its proper divisors (14169059043620).

28338118087234 is a wasteful number, since it uses less digits than its factorization.

28338118087234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14169059043619.

The product of its (nonzero) digits is 12386304, while the sum is 58.

The spelling of 28338118087234 in words is "twenty-eight trillion, three hundred thirty-eight billion, one hundred eighteen million, eighty-seven thousand, two hundred thirty-four".