28954381226 has 8 divisors (see below), whose sum is σ = 43440521124. Its totient is φ = 14474207520.

The previous prime is 28954381213. The next prime is 28954381297. The reversal of 28954381226 is 62218345982.

It can be written as a sum of positive squares in 2 ways, for example, as 25904580601 + 3049800625 = 160949^2 + 55225^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1479395 + ... + 1498838.

Almost surely, 2^28954381226 is an apocalyptic number.

28954381226 is a deficient number, since it is larger than the sum of its proper divisors (14486139898).

28954381226 is a wasteful number, since it uses less digits than its factorization.

28954381226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983096.

The product of its digits is 1658880, while the sum is 50.

The spelling of 28954381226 in words is "twenty-eight billion, nine hundred fifty-four million, three hundred eighty-one thousand, two hundred twenty-six".