24072221 has 8 divisors (see below), whose sum is σ = 26830080. Its totient is φ = 21463488.

The previous prime is 24072203. The next prime is 24072227. The reversal of 24072221 is 12227042.

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 24072221 - 2¹⁰ = 24071197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24072193 and 24072202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24072227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36941 + ... + 37586.

It is an arithmetic number, because the mean of its divisors is an integer number (3353760).

Almost surely, 2^24072221 is an apocalyptic number.

It is an amenable number.

24072221 is a deficient number, since it is larger than the sum of its proper divisors (2757859).

24072221 is a wasteful number, since it uses less digits than its factorization.

24072221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74563.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 24072221 is about 4906.3449736031. The cubic root of 24072221 is about 288.7389596174.

Adding to 24072221 its reverse (12227042), we get a palindrome (36299263).

The spelling of 24072221 in words is "twenty-four million, seventy-two thousand, two hundred twenty-one".