23221429 has 8 divisors (see below), whose sum is σ = 28951488. Its totient is φ = 18094560.

The previous prime is 23221417. The next prime is 23221447. The reversal of 23221429 is 92412232.

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

It is not a de Polignac number, because 23221429 - 2⁷ = 23221301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23222429) 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, 150712 + ... + 150865.

It is an arithmetic number, because the mean of its divisors is an integer number (3618936).

Almost surely, 2^23221429 is an apocalyptic number.

It is an amenable number.

23221429 is a deficient number, since it is larger than the sum of its proper divisors (5730059).

23221429 is a wasteful number, since it uses less digits than its factorization.

23221429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301595.

The product of its digits is 1728, while the sum is 25.

The square root of 23221429 is about 4818.8617950715. The cubic root of 23221429 is about 285.2964147008.

The spelling of 23221429 in words is "twenty-three million, two hundred twenty-one thousand, four hundred twenty-nine".