22077444 has 12 divisors (see below), whose sum is σ = 51514064. Its totient is φ = 7359144.

The previous prime is 22077443. The next prime is 22077457. The reversal of 22077444 is 44477022.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (22077443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 919882 + ... + 919905.

Almost surely, 2^22077444 is an apocalyptic number.

It is an amenable number.

22077444 is an abundant number, since it is smaller than the sum of its proper divisors (29436620).

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

22077444 is a wasteful number, since it uses less digits than its factorization.

22077444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839794 (or 1839792 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 22077444 is about 4698.6640654552. The cubic root of 22077444 is about 280.5323376154.

The spelling of 22077444 in words is "twenty-two million, seventy-seven thousand, four hundred forty-four".