24421945 has 12 divisors (see below), whose sum is σ = 31133484. Its totient is φ = 18387200.

The previous prime is 24421933. The next prime is 24421949. The reversal of 24421945 is 54912442.

It can be written as a sum of positive squares in 6 ways, for example, as 8003241 + 16418704 = 2829^2 + 4052^2 .

It is not a de Polignac number, because 24421945 - 2²¹ = 22324793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24421949) 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 11 ways as a sum of consecutive naturals, for example, 7006 + ... + 9895.

It is an arithmetic number, because the mean of its divisors is an integer number (2594457).

Almost surely, 2^24421945 is an apocalyptic number.

It is an amenable number.

24421945 is a deficient number, since it is larger than the sum of its proper divisors (6711539).

24421945 is a wasteful number, since it uses less digits than its factorization.

24421945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16940 (or 16923 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 24421945 is about 4941.8564325565. The cubic root of 24421945 is about 290.1305199244.

The spelling of 24421945 in words is "twenty-four million, four hundred twenty-one thousand, nine hundred forty-five".