22401346 has 16 divisors (see below), whose sum is σ = 36985248. Its totient is φ = 10091200.

The previous prime is 22401341. The next prime is 22401349. The reversal of 22401346 is 64310422.

It is a happy number.

It is a super-2 number, since 2×22401346² = 1003640605223432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (22401341) 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 7 ways as a sum of consecutive naturals, for example, 2020 + ... + 6991.

It is an arithmetic number, because the mean of its divisors is an integer number (2311578).

Almost surely, 2^22401346 is an apocalyptic number.

22401346 is a deficient number, since it is larger than the sum of its proper divisors (14583902).

22401346 is a wasteful number, since it uses less digits than its factorization.

22401346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9137.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 22401346 is about 4733.0060215470. The cubic root of 22401346 is about 281.8975953981.

Adding to 22401346 its reverse (64310422), we get a palindrome (86711768).

The spelling of 22401346 in words is "twenty-two million, four hundred one thousand, three hundred forty-six".