28422655560 has 768 divisors, whose sum is σ = 110246572800. Its totient is φ = 6288482304.

The previous prime is 28422655549. The next prime is 28422655601. The reversal of 28422655560 is 6555622482.

It is a happy number.

28422655560 is a `hidden beast` number, since 2 + 8 + 4 + 22 + 65 + 5 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 174372039 + ... + 174372201.

It is an arithmetic number, because the mean of its divisors is an integer number (143550225).

Almost surely, 2^28422655560 is an apocalyptic number.

28422655560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28422655560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55123286400).

28422655560 is an abundant number, since it is smaller than the sum of its proper divisors (81823917240).

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

28422655560 is a wasteful number, since it uses less digits than its factorization.

28422655560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 28422655560 in words is "twenty-eight billion, four hundred twenty-two million, six hundred fifty-five thousand, five hundred sixty".