22340664 has 64 divisors (see below), whose sum is σ = 62445600. Its totient is φ = 7400448.

The previous prime is 22340663. The next prime is 22340671. The reversal of 22340664 is 46604322.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22340663) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 63112 + ... + 63464.

Almost surely, 2^22340664 is an apocalyptic number.

22340664 is a gapful number since it is divisible by the number (24) 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 22340664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31222800).

22340664 is an abundant number, since it is smaller than the sum of its proper divisors (40104936).

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

22340664 is a wasteful number, since it uses less digits than its factorization.

22340664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 22340664 is about 4726.5911606569. The cubic root of 22340664 is about 281.6428253029.

Adding to 22340664 its reverse (46604322), we get a palindrome (68944986).

The spelling of 22340664 in words is "twenty-two million, three hundred forty thousand, six hundred sixty-four".