22213536 has 96 divisors (see below), whose sum is σ = 61689600. Its totient is φ = 6988800.

The previous prime is 22213517. The next prime is 22213537. The reversal of 22213536 is 63531222.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (22213537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219886 + ... + 219986.

It is an arithmetic number, because the mean of its divisors is an integer number (642600).

Almost surely, 2^22213536 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 22213536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30844800).

22213536 is an abundant number, since it is smaller than the sum of its proper divisors (39476064).

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

22213536 is a wasteful number, since it uses less digits than its factorization.

22213536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 214 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 22213536 is about 4713.1238048666. The cubic root of 22213536 is about 281.1075857756.

Adding to 22213536 its reverse (63531222), we get a palindrome (85744758).

The spelling of 22213536 in words is "twenty-two million, two hundred thirteen thousand, five hundred thirty-six".