23621429 has 8 divisors (see below), whose sum is σ = 26126520. Its totient is φ = 21214656.

The previous prime is 23621387. The next prime is 23621443. The reversal of 23621429 is 92412632.

It can be written as a sum of positive squares in 4 ways, for example, as 1276900 + 22344529 = 1130^2 + 4727^2 .

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 23621429 - 2¹² = 23617333 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 (23621459) 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, 24074 + ... + 25035.

It is an arithmetic number, because the mean of its divisors is an integer number (3265815).

Almost surely, 2^23621429 is an apocalyptic number.

It is an amenable number.

23621429 is a deficient number, since it is larger than the sum of its proper divisors (2505091).

23621429 is a wasteful number, since it uses less digits than its factorization.

23621429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49159.

The product of its digits is 5184, while the sum is 29.

The square root of 23621429 is about 4860.1881650817. The cubic root of 23621429 is about 286.9252193810.

The spelling of 23621429 in words is "twenty-three million, six hundred twenty-one thousand, four hundred twenty-nine".