22507234 has 4 divisors (see below), whose sum is σ = 33760854. Its totient is φ = 11253616.

The previous prime is 22507217. The next prime is 22507253. The reversal of 22507234 is 43270522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43270522 = 2 ⋅21635261.

It can be written as a sum of positive squares in only one way, i.e., 21949225 + 558009 = 4685^2 + 747^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22507199 and 22507208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5626807 + ... + 5626810.

Almost surely, 2^22507234 is an apocalyptic number.

22507234 is a deficient number, since it is larger than the sum of its proper divisors (11253620).

22507234 is a wasteful number, since it uses less digits than its factorization.

22507234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11253619.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 22507234 is about 4744.1789595250. The cubic root of 22507234 is about 282.3410607763.

Adding to 22507234 its reverse (43270522), we get a palindrome (65777756).

The spelling of 22507234 in words is "twenty-two million, five hundred seven thousand, two hundred thirty-four".