28131436226 has 8 divisors (see below), whose sum is σ = 42197980224. Its totient is φ = 14065442820.

The previous prime is 28131436211. The next prime is 28131436247. The reversal of 28131436226 is 62263413182.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28131436226.

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, 31811 + ... + 239321.

It is an arithmetic number, because the mean of its divisors is an integer number (5274747528).

Almost surely, 2^28131436226 is an apocalyptic number.

28131436226 is a deficient number, since it is larger than the sum of its proper divisors (14066543998).

28131436226 is a wasteful number, since it uses less digits than its factorization.

28131436226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275296.

The product of its digits is 82944, while the sum is 38.

The spelling of 28131436226 in words is "twenty-eight billion, one hundred thirty-one million, four hundred thirty-six thousand, two hundred twenty-six".