22001346 has 24 divisors (see below), whose sum is σ = 48164844. Its totient is φ = 7257600.

The previous prime is 22001341. The next prime is 22001359. The reversal of 22001346 is 64310022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21762225 + 239121 = 4665^2 + 489^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22001341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4555 + ... + 8046.

Almost surely, 2^22001346 is an apocalyptic number.

22001346 is an abundant number, since it is smaller than the sum of its proper divisors (26163498).

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

22001346 is a wasteful number, since it uses less digits than its factorization.

22001346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12706 (or 12703 counting only the distinct ones).

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

The square root of 22001346 is about 4690.5592417109. The cubic root of 22001346 is about 280.2096474110.

Adding to 22001346 its reverse (64310022), we get a palindrome (86311368).

The spelling of 22001346 in words is "twenty-two million, one thousand, three hundred forty-six".