22401342 has 48 divisors (see below), whose sum is σ = 54110160. Its totient is φ = 6656256.

The previous prime is 22401341. The next prime is 22401349. The reversal of 22401342 is 24310422.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22401341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3888 + ... + 7740.

It is an arithmetic number, because the mean of its divisors is an integer number (1127295).

Almost surely, 2^22401342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22401342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27055080).

22401342 is an abundant number, since it is smaller than the sum of its proper divisors (31708818).

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

22401342 is a wasteful number, since it uses less digits than its factorization.

22401342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3897 (or 3894 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22401342 is about 4733.0055989825. The cubic root of 22401342 is about 281.8975786195.

Adding to 22401342 its reverse (24310422), we get a palindrome (46711764).

The spelling of 22401342 in words is "twenty-two million, four hundred one thousand, three hundred forty-two".