23722229 has 8 divisors (see below), whose sum is σ = 24274488. Its totient is φ = 23175360.

The previous prime is 23722219. The next prime is 23722247. The reversal of 23722229 is 92222732.

It can be written as a sum of positive squares in 4 ways, for example, as 5329 + 23716900 = 73^2 + 4870^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23722229 - 2⁴ = 23722213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23722219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8339 + ... + 10815.

It is an arithmetic number, because the mean of its divisors is an integer number (3034311).

Almost surely, 2^23722229 is an apocalyptic number.

It is an amenable number.

23722229 is a deficient number, since it is larger than the sum of its proper divisors (552259).

23722229 is a wasteful number, since it uses less digits than its factorization.

23722229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695.

The product of its digits is 6048, while the sum is 29.

The square root of 23722229 is about 4870.5470945264. The cubic root of 23722229 is about 287.3327733235.

The spelling of 23722229 in words is "twenty-three million, seven hundred twenty-two thousand, two hundred twenty-nine".