22355340 has 192 divisors, whose sum is σ = 78962688. Its totient is φ = 4608000.

The previous prime is 22355339. The next prime is 22355351. The reversal of 22355340 is 4355322.

It is a super-2 number, since 2×22355340² = 999522453031200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22355340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 221290 + ... + 221390.

It is an arithmetic number, because the mean of its divisors is an integer number (411264).

Almost surely, 2^22355340 is an apocalyptic number.

22355340 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 22355340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39481344).

22355340 is an abundant number, since it is smaller than the sum of its proper divisors (56607348).

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

22355340 is a wasteful number, since it uses less digits than its factorization.

22355340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 22355340 is about 4728.1433988406. The cubic root of 22355340 is about 281.7044839497.

The spelling of 22355340 in words is "twenty-two million, three hundred fifty-five thousand, three hundred forty".