22018524 has 24 divisors (see below), whose sum is σ = 56047488. Its totient is φ = 6672240.

The previous prime is 22018523. The next prime is 22018531. The reversal of 22018524 is 42581022.

It is a junction number, because it is equal to n+sod(n) for n = 22018494 and 22018503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22018523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83272 + ... + 83535.

It is an arithmetic number, because the mean of its divisors is an integer number (2335312).

Almost surely, 2^22018524 is an apocalyptic number.

It is an amenable number.

22018524 is an abundant number, since it is smaller than the sum of its proper divisors (34028964).

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

22018524 is a wasteful number, since it uses less digits than its factorization.

22018524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166825 (or 166823 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 22018524 is about 4692.3900093662. The cubic root of 22018524 is about 280.2825549070.

Adding to 22018524 its reverse (42581022), we get a palindrome (64599546).

The spelling of 22018524 in words is "twenty-two million, eighteen thousand, five hundred twenty-four".