22065912 has 128 divisors (see below), whose sum is σ = 68947200. Its totient is φ = 6480000.

The previous prime is 22065863. The next prime is 22065919. The reversal of 22065912 is 21956022.

22065912 is a `hidden beast` number, since 2 + 2 + 0 + 659 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22065919) 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, 87787 + ... + 88037.

It is an arithmetic number, because the mean of its divisors is an integer number (538650).

Almost surely, 2^22065912 is an apocalyptic number.

22065912 is a gapful number since it is divisible by the number (22) 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 22065912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34473600).

22065912 is an abundant number, since it is smaller than the sum of its proper divisors (46881288).

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

22065912 is a wasteful number, since it uses less digits than its factorization.

22065912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 22065912 is about 4697.4367478445. The cubic root of 22065912 is about 280.4834844004.

It can be divided in two parts, 2206 and 5912, that added together give a palindrome (8118).

The spelling of 22065912 in words is "twenty-two million, sixty-five thousand, nine hundred twelve".