22200729 has 4 divisors (see below), whose sum is σ = 29600976. Its totient is φ = 14800484.

The previous prime is 22200677. The next prime is 22200733. The reversal of 22200729 is 92700222.

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 22200729 - 2⁷ = 22200601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22200699 and 22200708.

It is not an unprimeable number, because it can be changed into a prime (22200769) 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 in 3 ways as a sum of consecutive naturals, for example, 3700119 + ... + 3700124.

It is an arithmetic number, because the mean of its divisors is an integer number (7400244).

Almost surely, 2^22200729 is an apocalyptic number.

It is an amenable number.

22200729 is a deficient number, since it is larger than the sum of its proper divisors (7400247).

22200729 is an equidigital number, since it uses as much as digits as its factorization.

22200729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400246.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 22200729 is about 4711.7649559374. The cubic root of 22200729 is about 281.0535521007.

The spelling of 22200729 in words is "twenty-two million, two hundred thousand, seven hundred twenty-nine".