22180029 has 4 divisors (see below), whose sum is σ = 29573376. Its totient is φ = 14786684.

The previous prime is 22180013. The next prime is 22180031. The reversal of 22180029 is 92008122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22180029 - 2⁴ = 22180013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22179990 and 22180008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22180009) 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 3 ways as a sum of consecutive naturals, for example, 3696669 + ... + 3696674.

It is an arithmetic number, because the mean of its divisors is an integer number (7393344).

Almost surely, 2^22180029 is an apocalyptic number.

It is an amenable number.

22180029 is a deficient number, since it is larger than the sum of its proper divisors (7393347).

22180029 is an equidigital number, since it uses as much as digits as its factorization.

22180029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7393346.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 22180029 is about 4709.5678145664. The cubic root of 22180029 is about 280.9661733237.

The spelling of 22180029 in words is "twenty-two million, one hundred eighty thousand, twenty-nine".