22729384700 has 72 divisors (see below), whose sum is σ = 54129285504. Its totient is φ = 8215672000.

The previous prime is 22729384697. The next prime is 22729384751. The reversal of 22729384700 is 748392722.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121835 + ... + 245565.

It is an arithmetic number, because the mean of its divisors is an integer number (751795632).

Almost surely, 2^22729384700 is an apocalyptic number.

22729384700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22729384700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27064642752).

22729384700 is an abundant number, since it is smaller than the sum of its proper divisors (31399900804).

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

22729384700 is a wasteful number, since it uses less digits than its factorization.

22729384700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123923 (or 123916 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 22729384700 in words is "twenty-two billion, seven hundred twenty-nine million, three hundred eighty-four thousand, seven hundred".