22626226540 has 96 divisors (see below), whose sum is σ = 50231301120. Its totient is φ = 8544096000.

The previous prime is 22626226531. The next prime is 22626226541. The reversal of 22626226540 is 4562262622.

It is a super-2 number, since 2×22626226540² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22626226540.

It is not an unprimeable number, because it can be changed into a prime (22626226541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15592815 + ... + 15594265.

It is an arithmetic number, because the mean of its divisors is an integer number (523242720).

Almost surely, 2^22626226540 is an apocalyptic number.

22626226540 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 22626226540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25115650560).

22626226540 is an abundant number, since it is smaller than the sum of its proper divisors (27605074580).

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

22626226540 is a wasteful number, since it uses less digits than its factorization.

22626226540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903 (or 1901 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 22626226540 in words is "twenty-two billion, six hundred twenty-six million, two hundred twenty-six thousand, five hundred forty".