22451434 has 4 divisors (see below), whose sum is σ = 33677154. Its totient is φ = 11225716.

The previous prime is 22451413. The next prime is 22451437. The reversal of 22451434 is 43415422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21650409 + 801025 = 4653^2 + 895^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22451399 and 22451408.

It is not an unprimeable number, because it can be changed into a prime (22451437) 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 as a sum of consecutive naturals, namely, 5612857 + ... + 5612860.

Almost surely, 2^22451434 is an apocalyptic number.

22451434 is a deficient number, since it is larger than the sum of its proper divisors (11225720).

22451434 is a wasteful number, since it uses less digits than its factorization.

22451434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11225719.

The product of its digits is 3840, while the sum is 25.

The square root of 22451434 is about 4738.2944188811. The cubic root of 22451434 is about 282.1075407623.

Adding to 22451434 its reverse (43415422), we get a palindrome (65866856).

The spelling of 22451434 in words is "twenty-two million, four hundred fifty-one thousand, four hundred thirty-four".