24421621 has 8 divisors (see below), whose sum is σ = 27946944. Its totient is φ = 20905440.

The previous prime is 24421613. The next prime is 24421627. The reversal of 24421621 is 12612442.

It is a happy number.

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 24421621 - 2³ = 24421613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24421592 and 24421601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24421627) 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, 5001 + ... + 8593.

It is an arithmetic number, because the mean of its divisors is an integer number (3493368).

Almost surely, 2^24421621 is an apocalyptic number.

It is an amenable number.

24421621 is a deficient number, since it is larger than the sum of its proper divisors (3525323).

24421621 is an equidigital number, since it uses as much as digits as its factorization.

24421621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571.

The product of its digits is 768, while the sum is 22.

The square root of 24421621 is about 4941.8236512445. The cubic root of 24421621 is about 290.1292368884.

The spelling of 24421621 in words is "twenty-four million, four hundred twenty-one thousand, six hundred twenty-one".