22535000 has 40 divisors (see below), whose sum is σ = 52811220. Its totient is φ = 9012000.

The previous prime is 22534999. The next prime is 22535003. The reversal of 22535000 is 53522.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 22535000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22535003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2747 + ... + 7253.

Almost surely, 2^22535000 is an apocalyptic number.

22535000 is a gapful number since it is divisible by the number (20) 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 22535000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26405610).

22535000 is an abundant number, since it is smaller than the sum of its proper divisors (30276220).

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

22535000 is an equidigital number, since it uses as much as digits as its factorization.

22535000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533 (or 4514 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 22535000 is about 4747.1043805672. The cubic root of 22535000 is about 282.4571162096.

Adding to 22535000 its reverse (53522), we get a palindrome (22588522).

The spelling of 22535000 in words is "twenty-two million, five hundred thirty-five thousand".