22648281390 has 192 divisors, whose sum is σ = 71812915200. Its totient is φ = 4836920832.

The previous prime is 22648281379. The next prime is 22648281391. The reversal of 22648281390 is 9318284622.

22648281390 is a `hidden beast` number, since 2 + 2 + 6 + 482 + 81 + 3 + 90 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22648281391) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 860851 + ... + 886769.

It is an arithmetic number, because the mean of its divisors is an integer number (374025600).

Almost surely, 2^22648281390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22648281390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35906457600).

22648281390 is an abundant number, since it is smaller than the sum of its proper divisors (49164633810).

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

22648281390 is a wasteful number, since it uses less digits than its factorization.

22648281390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26031 (or 26028 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 22648281390 in words is "twenty-two billion, six hundred forty-eight million, two hundred eighty-one thousand, three hundred ninety".