24628221 has 24 divisors (see below), whose sum is σ = 37140480. Its totient is φ = 15706656.

The previous prime is 24628213. The next prime is 24628259. The reversal of 24628221 is 12282642.

It is a happy number.

It is not a de Polignac number, because 24628221 - 2³ = 24628213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24628271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32776 + ... + 33518.

It is an arithmetic number, because the mean of its divisors is an integer number (1547520).

Almost surely, 2^24628221 is an apocalyptic number.

It is an amenable number.

24628221 is a deficient number, since it is larger than the sum of its proper divisors (12512259).

24628221 is a wasteful number, since it uses less digits than its factorization.

24628221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 902 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 24628221 is about 4962.6828429792. The cubic root of 24628221 is about 290.9450776711.

The spelling of 24628221 in words is "twenty-four million, six hundred twenty-eight thousand, two hundred twenty-one".