22651234 has 4 divisors (see below), whose sum is σ = 33976854. Its totient is φ = 11325616.

The previous prime is 22651231. The next prime is 22651241. The reversal of 22651234 is 43215622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43215622 = 2 ⋅21607811.

It can be written as a sum of positive squares in only one way, i.e., 22610025 + 41209 = 4755^2 + 203^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22651199 and 22651208.

It is not an unprimeable number, because it can be changed into a prime (22651231) 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 as a sum of consecutive naturals, namely, 5662807 + ... + 5662810.

Almost surely, 2^22651234 is an apocalyptic number.

22651234 is a deficient number, since it is larger than the sum of its proper divisors (11325620).

22651234 is a wasteful number, since it uses less digits than its factorization.

22651234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11325619.

The product of its digits is 2880, while the sum is 25.

The square root of 22651234 is about 4759.3312555442. The cubic root of 22651234 is about 282.9419151852.

Adding to 22651234 its reverse (43215622), we get a palindrome (65866856).

The spelling of 22651234 in words is "twenty-two million, six hundred fifty-one thousand, two hundred thirty-four".