28622326272 has 80 divisors (see below), whose sum is σ = 78881156640. Its totient is φ = 9211768832.

The previous prime is 28622326259. The next prime is 28622326273. The reversal of 28622326272 is 27262322682.

It is a super-2 number, since 2×28622326272² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28622326273) 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, 276738 + ... + 365825.

It is an arithmetic number, because the mean of its divisors is an integer number (986014458).

Almost surely, 2^28622326272 is an apocalyptic number.

It is an amenable number.

28622326272 is an abundant number, since it is smaller than the sum of its proper divisors (50258830368).

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

28622326272 is an equidigital number, since it uses as much as digits as its factorization.

28622326272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642613 (or 642597 counting only the distinct ones).

The product of its digits is 387072, while the sum is 42.

The spelling of 28622326272 in words is "twenty-eight billion, six hundred twenty-two million, three hundred twenty-six thousand, two hundred seventy-two".