24440081 has 4 divisors (see below), whose sum is σ = 24682164. Its totient is φ = 24198000.

The previous prime is 24440041. The next prime is 24440083. The reversal of 24440081 is 18004442.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23814400 + 625681 = 4880^2 + 791^2 .

It is a cyclic number.

It is not a de Polignac number, because 24440081 - 2¹⁴ = 24423697 is a prime.

It is a super-2 number, since 2×24440081² = 1194635118573122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24440083) 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 3 ways as a sum of consecutive naturals, for example, 120890 + ... + 121091.

It is an arithmetic number, because the mean of its divisors is an integer number (6170541).

Almost surely, 2^24440081 is an apocalyptic number.

It is an amenable number.

24440081 is a deficient number, since it is larger than the sum of its proper divisors (242083).

24440081 is a wasteful number, since it uses less digits than its factorization.

24440081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242082.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 24440081 is about 4943.6910299896. The cubic root of 24440081 is about 290.2023201729.

The spelling of 24440081 in words is "twenty-four million, four hundred forty thousand, eighty-one".