28208295422 has 4 divisors (see below), whose sum is σ = 42312443136. Its totient is φ = 14104147710.

The previous prime is 28208295419. The next prime is 28208295439. The reversal of 28208295422 is 22459280282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22459280282 = 2 ⋅11229640141.

It is a super-2 number, since 2×28208295422² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7052073854 + ... + 7052073857.

It is an arithmetic number, because the mean of its divisors is an integer number (10578110784).

Almost surely, 2^28208295422 is an apocalyptic number.

28208295422 is a deficient number, since it is larger than the sum of its proper divisors (14104147714).

28208295422 is a wasteful number, since it uses less digits than its factorization.

28208295422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14104147713.

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 28208295422 in words is "twenty-eight billion, two hundred eight million, two hundred ninety-five thousand, four hundred twenty-two".