28220005662 has 8 divisors (see below), whose sum is σ = 56440011336. Its totient is φ = 9406668552.

The previous prime is 28220005657. The next prime is 28220005669. The reversal of 28220005662 is 26650002282.

28220005662 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

28220005662 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28220005669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2351667133 + ... + 2351667144.

It is an arithmetic number, because the mean of its divisors is an integer number (7055001417).

Almost surely, 2^28220005662 is an apocalyptic number.

28220005662 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28220005662 is a wasteful number, since it uses less digits than its factorization.

28220005662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703334282.

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 28220005662 in words is "twenty-eight billion, two hundred twenty million, five thousand, six hundred sixty-two".