22168340 has 48 divisors (see below), whose sum is σ = 49814352. Its totient is φ = 8257536.

The previous prime is 22168327. The next prime is 22168351. The reversal of 22168340 is 4386122.

It can be written as a sum of positive squares in 8 ways, for example, as 228484 + 21939856 = 478^2 + 4684^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38132 + ... + 38708.

It is an arithmetic number, because the mean of its divisors is an integer number (1037799).

Almost surely, 2^22168340 is an apocalyptic number.

22168340 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 22168340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24907176).

22168340 is an abundant number, since it is smaller than the sum of its proper divisors (27646012).

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

22168340 is a wasteful number, since it uses less digits than its factorization.

22168340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 22168340 is about 4708.3266666619. The cubic root of 22168340 is about 280.9168077330.

The spelling of 22168340 in words is "twenty-two million, one hundred sixty-eight thousand, three hundred forty".