28180093226 has 8 divisors (see below), whose sum is σ = 42292381284. Its totient is φ = 14082632800.

The previous prime is 28180093223. The next prime is 28180093247. The reversal of 28180093226 is 62239008182.

It can be written as a sum of positive squares in 2 ways, for example, as 18819724225 + 9360369001 = 137185^2 + 96749^2 .

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 (28180093223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3702155 + ... + 3709758.

Almost surely, 2^28180093226 is an apocalyptic number.

28180093226 is a deficient number, since it is larger than the sum of its proper divisors (14112288058).

28180093226 is a wasteful number, since it uses less digits than its factorization.

28180093226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7413816.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 28180093226 in words is "twenty-eight billion, one hundred eighty million, ninety-three thousand, two hundred twenty-six".