24643428 has 12 divisors (see below), whose sum is σ = 57501360. Its totient is φ = 8214472.

The previous prime is 24643427. The next prime is 24643441. The reversal of 24643428 is 82434642.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (24643427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026798 + ... + 1026821.

It is an arithmetic number, because the mean of its divisors is an integer number (4791780).

Almost surely, 2^24643428 is an apocalyptic number.

It is an amenable number.

24643428 is an abundant number, since it is smaller than the sum of its proper divisors (32857932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

24643428 is a wasteful number, since it uses less digits than its factorization.

24643428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053626 (or 2053624 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

The square root of 24643428 is about 4964.2147415276. The cubic root of 24643428 is about 291.0049478971.

The spelling of 24643428 in words is "twenty-four million, six hundred forty-three thousand, four hundred twenty-eight".