22066340 has 24 divisors (see below), whose sum is σ = 49065912. Its totient is φ = 8307200.

The previous prime is 22066337. The next prime is 22066351. The reversal of 22066340 is 4366022.

It can be written as a sum of positive squares in 4 ways, for example, as 8479744 + 13586596 = 2912^2 + 3686^2 .

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, 32111 + ... + 32790.

It is an arithmetic number, because the mean of its divisors is an integer number (2044413).

Almost surely, 2^22066340 is an apocalyptic number.

22066340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22066340 is an abundant number, since it is smaller than the sum of its proper divisors (26999572).

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

22066340 is a wasteful number, since it uses less digits than its factorization.

22066340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64927 (or 64925 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 22066340 is about 4697.4823043839. The cubic root of 22066340 is about 280.4852978484.

The spelling of 22066340 in words is "twenty-two million, sixty-six thousand, three hundred forty".