28221036654 has 16 divisors (see below), whose sum is σ = 57754680192. Its totient is φ = 9188244408.

The previous prime is 28221036653. The next prime is 28221036667. The reversal of 28221036654 is 45663012282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28221036653) 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 7 ways as a sum of consecutive naturals, for example, 54691674 + ... + 54692189.

It is an arithmetic number, because the mean of its divisors is an integer number (3609667512).

Almost surely, 2^28221036654 is an apocalyptic number.

28221036654 is an abundant number, since it is smaller than the sum of its proper divisors (29533643538).

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

28221036654 is a wasteful number, since it uses less digits than its factorization.

28221036654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109383911.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 28221036654 in words is "twenty-eight billion, two hundred twenty-one million, thirty-six thousand, six hundred fifty-four".