22049000000028 has 144 divisors (see below), whose sum is σ = 59157724080000. Its totient is φ = 6904918825344.

The previous prime is 22049000000021. The next prime is 22049000000029. The reversal of 22049000000028 is 82000000094022.

22049000000028 is a nontrivial binomial coefficient, being equal to C(6640633, 2).

It is a junction number, because it is equal to n+sod(n) for n = 22048999999938 and 22049000000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22049000000021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62911251 + ... + 63260757.

Almost surely, 2^{22049000000028} is an apocalyptic number.

22049000000028 is the 6640632-nd triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22049000000028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29578862040000).

22049000000028 is an abundant number, since it is smaller than the sum of its proper divisors (37108724079972).

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

22049000000028 is a wasteful number, since it uses less digits than its factorization.

22049000000028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350304 (or 350299 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 22049000000028 in words is "twenty-two trillion, forty-nine billion, twenty-eight", and thus it is an aban number and an uban number.