22749232 has 40 divisors (see below), whose sum is σ = 50621760. Its totient is φ = 9794880.

The previous prime is 22749203. The next prime is 22749239. The reversal of 22749232 is 23294722.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22749194 and 22749203.

It is not an unprimeable number, because it can be changed into a prime (22749239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58 + ... + 6745.

It is an arithmetic number, because the mean of its divisors is an integer number (1265544).

Almost surely, 2^22749232 is an apocalyptic number.

22749232 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 22749232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25310880).

22749232 is an abundant number, since it is smaller than the sum of its proper divisors (27872528).

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

22749232 is a wasteful number, since it uses less digits than its factorization.

22749232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6841 (or 6835 counting only the distinct ones).

The product of its digits is 12096, while the sum is 31.

The square root of 22749232 is about 4769.6154981298. The cubic root of 22749232 is about 283.3493668743.

Subtracting 22749232 from its reverse (23294722), we obtain a triangular number (545490 = T₁₀₄₄).

The spelling of 22749232 in words is "twenty-two million, seven hundred forty-nine thousand, two hundred thirty-two".