22755642 has 64 divisors (see below), whose sum is σ = 56899584. Its totient is φ = 5906880.

The previous prime is 22755619. The next prime is 22755647. The reversal of 22755642 is 24655722.

It is not an unprimeable number, because it can be changed into a prime (22755647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38473 + ... + 39059.

It is an arithmetic number, because the mean of its divisors is an integer number (889056).

Almost surely, 2^22755642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22755642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28449792).

22755642 is an abundant number, since it is smaller than the sum of its proper divisors (34143942).

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

22755642 is a wasteful number, since it uses less digits than its factorization.

22755642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683.

The product of its digits is 33600, while the sum is 33.

The square root of 22755642 is about 4770.2874127247. The cubic root of 22755642 is about 283.3759772800.

The spelling of 22755642 in words is "twenty-two million, seven hundred fifty-five thousand, six hundred forty-two".