22066240 has 56 divisors (see below), whose sum is σ = 60057792. Its totient is φ = 7564800.

The previous prime is 22066229. The next prime is 22066243. The reversal of 22066240 is 4266022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (22066243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2686 + ... + 7165.

Almost surely, 2^22066240 is an apocalyptic number.

22066240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22066240 is an abundant number, since it is smaller than the sum of its proper divisors (37991552).

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

22066240 is an equidigital number, since it uses as much as digits as its factorization.

22066240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9875 (or 9865 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 22066240 is about 4697.4716603722. The cubic root of 22066240 is about 280.4848741477.

The spelling of 22066240 in words is "twenty-two million, sixty-six thousand, two hundred forty".