22231376 has 60 divisors (see below), whose sum is σ = 47857428. Its totient is φ = 9962496.

The previous prime is 22231373. The next prime is 22231379. The reversal of 22231376 is 67313222.

It is an interprime number because it is at equal distance from previous prime (22231373) and next prime (22231379).

It can be written as a sum of positive squares in 2 ways, for example, as 18696976 + 3534400 = 4324^2 + 1880^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231373) 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 11 ways as a sum of consecutive naturals, for example, 472985 + ... + 473031.

Almost surely, 2^22231376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22231376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23928714).

22231376 is an abundant number, since it is smaller than the sum of its proper divisors (25626052).

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

22231376 is a wasteful number, since it uses less digits than its factorization.

22231376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 103 counting only the distinct ones).

The product of its digits is 3024, while the sum is 26.

The square root of 22231376 is about 4715.0160126982. The cubic root of 22231376 is about 281.1828194440.

Adding to 22231376 its reverse (67313222), we get a palindrome (89544598).

The spelling of 22231376 in words is "twenty-two million, two hundred thirty-one thousand, three hundred seventy-six".