22727232 has 168 divisors, whose sum is σ = 75602592. Its totient is φ = 6451200.

The previous prime is 22727231. The next prime is 22727233. The reversal of 22727232 is 23272722.

It is an interprime number because it is at equal distance from previous prime (22727231) and next prime (22727233).

It is a junction number, because it is equal to n+sod(n) for n = 22727196 and 22727205.

It is not an unprimeable number, because it can be changed into a prime (22727231) 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, 107607 + ... + 107817.

Almost surely, 2^22727232 is an apocalyptic number.

22727232 is a gapful number since it is divisible by the number (22) 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 22727232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37801296).

22727232 is an abundant number, since it is smaller than the sum of its proper divisors (52875360).

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

22727232 is a wasteful number, since it uses less digits than its factorization.

22727232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 244 counting only the distinct ones).

The product of its digits is 4704, while the sum is 27.

The square root of 22727232 is about 4767.3086747136. The cubic root of 22727232 is about 283.2579982717.

Adding to 22727232 its reverse (23272722), we get a palindrome (45999954).

Subtracting 22727232 from its reverse (23272722), we obtain a triangular number (545490 = T₁₀₄₄).

The spelling of 22727232 in words is "twenty-two million, seven hundred twenty-seven thousand, two hundred thirty-two".