20440024258 has 8 divisors (see below), whose sum is σ = 30791625228. Its totient is φ = 10176149184.

The previous prime is 20440024247. The next prime is 20440024259. The reversal of 20440024258 is 85242004402.

It can be written as a sum of positive squares in 2 ways, for example, as 15113505969 + 5326518289 = 122937^2 + 72983^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20440024259) 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, 21930891 + ... + 21931822.

Almost surely, 2^20440024258 is an apocalyptic number.

20440024258 is a deficient number, since it is larger than the sum of its proper divisors (10351600970).

20440024258 is a wasteful number, since it uses less digits than its factorization.

20440024258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43862948.

The product of its (nonzero) digits is 20480, while the sum is 31.

The spelling of 20440024258 in words is "twenty billion, four hundred forty million, twenty-four thousand, two hundred fifty-eight".