22705424 has 30 divisors (see below), whose sum is σ = 51175854. Its totient is φ = 9730560.

The previous prime is 22705391. The next prime is 22705427. The reversal of 22705424 is 42450722.

It can be written as a sum of positive squares in only one way, i.e., 22391824 + 313600 = 4732^2 + 560^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22705393 and 22705402.

It is not an unprimeable number, because it can be changed into a prime (22705427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13697 + ... + 15264.

Almost surely, 2^22705424 is an apocalyptic number.

It is an amenable number.

22705424 is an abundant number, since it is smaller than the sum of its proper divisors (28470430).

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

22705424 is a wasteful number, since it uses less digits than its factorization.

22705424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28983 (or 28970 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 22705424 is about 4765.0208813813. The cubic root of 22705424 is about 283.1673688556.

The spelling of 22705424 in words is "twenty-two million, seven hundred five thousand, four hundred twenty-four".