28326365220 has 24 divisors (see below), whose sum is σ = 79313822784. Its totient is φ = 7553697376.

The previous prime is 28326365189. The next prime is 28326365233. The reversal of 28326365220 is 2256362382.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236052984 + ... + 236053103.

It is an arithmetic number, because the mean of its divisors is an integer number (3304742616).

Almost surely, 2^28326365220 is an apocalyptic number.

28326365220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28326365220 is an abundant number, since it is smaller than the sum of its proper divisors (50987457564).

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

28326365220 is a wasteful number, since it uses less digits than its factorization.

28326365220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472106099 (or 472106097 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 28326365220 in words is "twenty-eight billion, three hundred twenty-six million, three hundred sixty-five thousand, two hundred twenty".