22492229 has 4 divisors (see below), whose sum is σ = 23470176. Its totient is φ = 21514284.

The previous prime is 22492199. The next prime is 22492237. The reversal of 22492229 is 92229422.

22492229 = T₁₃₈₇ + T₁₃₈₈ + ... + T₁₄₀₉.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92229422 = 2 ⋅46114711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22492229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22492195 and 22492204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22492279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488939 + ... + 488984.

It is an arithmetic number, because the mean of its divisors is an integer number (5867544).

Almost surely, 2^22492229 is an apocalyptic number.

It is an amenable number.

22492229 is a deficient number, since it is larger than the sum of its proper divisors (977947).

22492229 is an equidigital number, since it uses as much as digits as its factorization.

22492229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977946.

The product of its digits is 10368, while the sum is 32.

The square root of 22492229 is about 4742.5972841893. The cubic root of 22492229 is about 282.2783036286.

The spelling of 22492229 in words is "twenty-two million, four hundred ninety-two thousand, two hundred twenty-nine".