22397340784 has 320 divisors, whose sum is σ = 58076282880. Its totient is φ = 8128512000.

The previous prime is 22397340767. The next prime is 22397340793. The reversal of 22397340784 is 48704379322.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 92934904 + ... + 92935144.

It is an arithmetic number, because the mean of its divisors is an integer number (181488384).

Almost surely, 2^22397340784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22397340784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29038141440).

22397340784 is an abundant number, since it is smaller than the sum of its proper divisors (35678942096).

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

22397340784 is a wasteful number, since it uses less digits than its factorization.

22397340784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 49.

The spelling of 22397340784 in words is "twenty-two billion, three hundred ninety-seven million, three hundred forty thousand, seven hundred eighty-four".