20389924452 has 24 divisors (see below), whose sum is σ = 47861384256. Its totient is φ = 6755942368.

The previous prime is 20389924433. The next prime is 20389924481. The reversal of 20389924452 is 25442998302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5085303 + ... + 5089310.

It is an arithmetic number, because the mean of its divisors is an integer number (1994224344).

Almost surely, 2^20389924452 is an apocalyptic number.

It is an amenable number.

20389924452 is an abundant number, since it is smaller than the sum of its proper divisors (27471459804).

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

20389924452 is a wasteful number, since it uses less digits than its factorization.

20389924452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10174787 (or 10174785 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 20389924452 in words is "twenty billion, three hundred eighty-nine million, nine hundred twenty-four thousand, four hundred fifty-two".