22705434 has 64 divisors (see below), whose sum is σ = 53136000. Its totient is φ = 7266672.

The previous prime is 22705433. The next prime is 22705447. The reversal of 22705434 is 43450722.

22705434 is a `hidden beast` number, since 227 + 0 + 5 + 434 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 22705398 and 22705407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22705433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126757 + ... + 126935.

It is an arithmetic number, because the mean of its divisors is an integer number (830250).

Almost surely, 2^22705434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22705434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26568000).

22705434 is an abundant number, since it is smaller than the sum of its proper divisors (30430566).

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

22705434 is an equidigital number, since it uses as much as digits as its factorization.

22705434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 22705434 is about 4765.0219306945. The cubic root of 22705434 is about 283.1674104268.

The spelling of 22705434 in words is "twenty-two million, seven hundred five thousand, four hundred thirty-four".