22722429 has 4 divisors (see below), whose sum is σ = 30296576. Its totient is φ = 15148284.

The previous prime is 22722419. The next prime is 22722431. The reversal of 22722429 is 92422722.

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 not a de Polignac number, because 22722429 - 2¹⁷ = 22591357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22722396 and 22722405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22722419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3787069 + ... + 3787074.

It is an arithmetic number, because the mean of its divisors is an integer number (7574144).

Almost surely, 2^22722429 is an apocalyptic number.

It is an amenable number.

22722429 is a deficient number, since it is larger than the sum of its proper divisors (7574147).

22722429 is an equidigital number, since it uses as much as digits as its factorization.

22722429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574146.

The product of its digits is 8064, while the sum is 30.

The square root of 22722429 is about 4766.8049047554. The cubic root of 22722429 is about 283.2380430037.

The spelling of 22722429 in words is "twenty-two million, seven hundred twenty-two thousand, four hundred twenty-nine".