22506947190 has 576 divisors, whose sum is σ = 78881572224. Its totient is φ = 4331667456.

The previous prime is 22506947159. The next prime is 22506947201. The reversal of 22506947190 is 9174960522.

It is a super-2 number, since 2×22506947190² (a number of 22 digits) contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 87575542 + ... + 87575798.

It is an arithmetic number, because the mean of its divisors is an integer number (136947174).

Almost surely, 2^22506947190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22506947190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39440786112).

22506947190 is an abundant number, since it is smaller than the sum of its proper divisors (56374625034).

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

22506947190 is a wasteful number, since it uses less digits than its factorization.

22506947190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 22506947190 in words is "twenty-two billion, five hundred six million, nine hundred forty-seven thousand, one hundred ninety".