24820993 has 4 divisors (see below), whose sum is σ = 24839748. Its totient is φ = 24802240.

The previous prime is 24820951. The next prime is 24820997. The reversal of 24820993 is 39902842.

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 14010049 + 10810944 = 3743^2 + 3288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24820993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24820997) 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, 7228 + ... + 10093.

It is an arithmetic number, because the mean of its divisors is an integer number (6209937).

Almost surely, 2^24820993 is an apocalyptic number.

It is an amenable number.

24820993 is a deficient number, since it is larger than the sum of its proper divisors (18755).

24820993 is a wasteful number, since it uses less digits than its factorization.

24820993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18754.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 24820993 is about 4982.0671412577. The cubic root of 24820993 is about 291.7022086030.

The spelling of 24820993 in words is "twenty-four million, eight hundred twenty thousand, nine hundred ninety-three".