28706906226 has 32 divisors (see below), whose sum is σ = 57623462208. Its totient is φ = 9534067200.

The previous prime is 28706906203. The next prime is 28706906269. The reversal of 28706906226 is 62260960782.

It is a super-3 number, since 3×28706906226³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3637681 + ... + 3645563.

It is an arithmetic number, because the mean of its divisors is an integer number (1800733194).

Almost surely, 2^28706906226 is an apocalyptic number.

28706906226 is an abundant number, since it is smaller than the sum of its proper divisors (28916555982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28706906226 is a wasteful number, since it uses less digits than its factorization.

28706906226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10026.

The product of its (nonzero) digits is 870912, while the sum is 48.

It can be divided in two parts, 2870 and 6906226, that added together give a palindrome (6909096).

The spelling of 28706906226 in words is "twenty-eight billion, seven hundred six million, nine hundred six thousand, two hundred twenty-six".