22106340 has 72 divisors (see below), whose sum is σ = 67511808. Its totient is φ = 5855040.

The previous prime is 22106327. The next prime is 22106351. The reversal of 22106340 is 4360122.

It is a happy number.

22106340 is a `hidden beast` number, since 22 + 10 + 634 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34059 + ... + 34701.

It is an arithmetic number, because the mean of its divisors is an integer number (937664).

Almost surely, 2^22106340 is an apocalyptic number.

22106340 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 22106340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33755904).

22106340 is an abundant number, since it is smaller than the sum of its proper divisors (45405468).

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

22106340 is a wasteful number, since it uses less digits than its factorization.

22106340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22106340 is about 4701.7379765359. The cubic root of 22106340 is about 280.6546755753.

Adding to 22106340 its reverse (4360122), we get a palindrome (26466462).

The spelling of 22106340 in words is "twenty-two million, one hundred six thousand, three hundred forty".