28064000220 has 24 divisors (see below), whose sum is σ = 78579200784. Its totient is φ = 7483733376.

The previous prime is 28064000219. The next prime is 28064000221. The reversal of 28064000220 is 2200046082.

It is an interprime number because it is at equal distance from previous prime (28064000219) and next prime (28064000221).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064000221) 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, 233866609 + ... + 233866728.

It is an arithmetic number, because the mean of its divisors is an integer number (3274133366).

Almost surely, 2^28064000220 is an apocalyptic number.

28064000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28064000220 is an abundant number, since it is smaller than the sum of its proper divisors (50515200564).

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

28064000220 is a wasteful number, since it uses less digits than its factorization.

28064000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467733349 (or 467733347 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The spelling of 28064000220 in words is "twenty-eight billion, sixty-four million, two hundred twenty", and thus it is an aban number.