22156234 has 4 divisors (see below), whose sum is σ = 33234354. Its totient is φ = 11078116.

The previous prime is 22156231. The next prime is 22156241. The reversal of 22156234 is 43265122.

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., 22118209 + 38025 = 4703^2 + 195^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22156199 and 22156208.

It is not an unprimeable number, because it can be changed into a prime (22156231) 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, 5539057 + ... + 5539060.

Almost surely, 2^22156234 is an apocalyptic number.

22156234 is a deficient number, since it is larger than the sum of its proper divisors (11078120).

22156234 is a wasteful number, since it uses less digits than its factorization.

22156234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11078119.

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

The square root of 22156234 is about 4707.0408963594. The cubic root of 22156234 is about 280.8656627501.

The spelling of 22156234 in words is "twenty-two million, one hundred fifty-six thousand, two hundred thirty-four".