22535072 has 48 divisors (see below), whose sum is σ = 52093440. Its totient is φ = 9393408.

The previous prime is 22535069. The next prime is 22535087. The reversal of 22535072 is 27053522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6929 + ... + 9647.

It is an arithmetic number, because the mean of its divisors is an integer number (1085280).

Almost surely, 2^22535072 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 22535072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26046720).

22535072 is an abundant number, since it is smaller than the sum of its proper divisors (29558368).

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

22535072 is a wasteful number, since it uses less digits than its factorization.

22535072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773 (or 2765 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 22535072 is about 4747.1119641315. Note that the first 3 decimals coincide. The cubic root of 22535072 is about 282.4574170289.

Adding to 22535072 its reverse (27053522), we get a palindrome (49588594).

The spelling of 22535072 in words is "twenty-two million, five hundred thirty-five thousand, seventy-two".