22770272500 has 60 divisors (see below), whose sum is σ = 51008750100. Its totient is φ = 8885920000.

The previous prime is 22770272491. The next prime is 22770272507. The reversal of 22770272500 is 527207722.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 21954941584 + 815330916 = 148172^2 + 28554^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22770272507) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8575 + ... + 213574.

It is an arithmetic number, because the mean of its divisors is an integer number (850145835).

Almost surely, 2^22770272500 is an apocalyptic number.

22770272500 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 22770272500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25504375050).

22770272500 is an abundant number, since it is smaller than the sum of its proper divisors (28238477600).

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

22770272500 is a wasteful number, since it uses less digits than its factorization.

22770272500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222214 (or 222197 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 34.

The spelling of 22770272500 in words is "twenty-two billion, seven hundred seventy million, two hundred seventy-two thousand, five hundred".