28336668220 has 24 divisors (see below), whose sum is σ = 68008004064. Its totient is φ = 9715429056.

The previous prime is 28336668193. The next prime is 28336668221. The reversal of 28336668220 is 2286663382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28336668221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101202247 + ... + 101202526.

It is an arithmetic number, because the mean of its divisors is an integer number (2833666836).

Almost surely, 2^28336668220 is an apocalyptic number.

28336668220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28336668220 is an abundant number, since it is smaller than the sum of its proper divisors (39671335844).

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

28336668220 is a wasteful number, since it uses less digits than its factorization.

28336668220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202404789 (or 202404787 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 46.

The spelling of 28336668220 in words is "twenty-eight billion, three hundred thirty-six million, six hundred sixty-eight thousand, two hundred twenty".