22108340 has 24 divisors (see below), whose sum is σ = 46865952. Its totient is φ = 8759840.

The previous prime is 22108327. The next prime is 22108357. The reversal of 22108340 is 4380122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3026 + ... + 7305.

It is an arithmetic number, because the mean of its divisors is an integer number (1952748).

Almost surely, 2^22108340 is an apocalyptic number.

22108340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22108340 is an abundant number, since it is smaller than the sum of its proper divisors (24757612).

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

22108340 is a wasteful number, since it uses less digits than its factorization.

22108340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10447 (or 10445 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 22108340 is about 4701.9506590350. The cubic root of 22108340 is about 280.6631390964.

Adding to 22108340 its reverse (4380122), we get a palindrome (26488462).

The spelling of 22108340 in words is "twenty-two million, one hundred eight thousand, three hundred forty".