22000740 has 48 divisors (see below), whose sum is σ = 62458368. Its totient is φ = 5785344.

The previous prime is 22000721. The next prime is 22000753. The reversal of 22000740 is 4700022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1869 + ... + 6891.

It is an arithmetic number, because the mean of its divisors is an integer number (1301216).

Almost surely, 2^22000740 is an apocalyptic number.

22000740 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 22000740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31229184).

22000740 is an abundant number, since it is smaller than the sum of its proper divisors (40457628).

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

22000740 is a wasteful number, since it uses less digits than its factorization.

22000740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108 (or 5106 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 22000740 is about 4690.4946434251. The cubic root of 22000740 is about 280.2070747108.

Adding to 22000740 its reverse (4700022), we get a palindrome (26700762).

The spelling of 22000740 in words is "twenty-two million, seven hundred forty", and thus it is an aban number.