22028324849 has 4 divisors (see below), whose sum is σ = 22030203300. Its totient is φ = 22026446400.

The previous prime is 22028324839. The next prime is 22028324867. The reversal of 22028324849 is 94842382022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94842382022 = 2 ⋅47421191011.

It can be written as a sum of positive squares in 2 ways, for example, as 7011047824 + 15017277025 = 83732^2 + 122545^2 .

It is a cyclic number.

It is not a de Polignac number, because 22028324849 - 2⁴ = 22028324833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22028324809) 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, 921524 + ... + 945125.

It is an arithmetic number, because the mean of its divisors is an integer number (5507550825).

Almost surely, 2^22028324849 is an apocalyptic number.

It is an amenable number.

22028324849 is a deficient number, since it is larger than the sum of its proper divisors (1878451).

22028324849 is a wasteful number, since it uses less digits than its factorization.

22028324849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878450.

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 22028324849 in words is "twenty-two billion, twenty-eight million, three hundred twenty-four thousand, eight hundred forty-nine".