22444533 has 20 divisors (see below), whose sum is σ = 34439020. Its totient is φ = 14556672.

The previous prime is 22444483. The next prime is 22444547. The reversal of 22444533 is 33544422.

It can be written as a sum of positive squares in 2 ways, for example, as 16184529 + 6260004 = 4023^2 + 2502^2 .

It is not a de Polignac number, because 22444533 - 2⁸ = 22444277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22444497 and 22444506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440533) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 748 + ... + 6741.

It is an arithmetic number, because the mean of its divisors is an integer number (1721951).

Almost surely, 2^22444533 is an apocalyptic number.

It is an amenable number.

22444533 is a deficient number, since it is larger than the sum of its proper divisors (11994487).

22444533 is an equidigital number, since it uses as much as digits as its factorization.

22444533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7538 (or 7529 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 22444533 is about 4737.5661472955. The cubic root of 22444533 is about 282.0786335718.

Adding to 22444533 its reverse (33544422), we get a palindrome (55988955).

The spelling of 22444533 in words is "twenty-two million, four hundred forty-four thousand, five hundred thirty-three".