20024449040 has 20 divisors (see below), whose sum is σ = 46556844204. Its totient is φ = 8009779584.

The previous prime is 20024449021. The next prime is 20024449051. The reversal of 20024449040 is 4094442002.

It can be written as a sum of positive squares in 2 ways, for example, as 3444281344 + 16580167696 = 58688^2 + 128764^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 20024448994 and 20024449012.

It is an unprimeable number.

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, 125152727 + ... + 125152886.

Almost surely, 2^20024449040 is an apocalyptic number.

20024449040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20024449040 is an abundant number, since it is smaller than the sum of its proper divisors (26532395164).

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

20024449040 is a wasteful number, since it uses less digits than its factorization.

20024449040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250305626 (or 250305620 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 20024449040 in words is "twenty billion, twenty-four million, four hundred forty-nine thousand, forty".