20338745284 has 36 divisors (see below), whose sum is σ = 42132118252. Its totient is φ = 8533736640.

The previous prime is 20338745281. The next prime is 20338745299. The reversal of 20338745284 is 48254783302.

It can be written as a sum of positive squares in 2 ways, for example, as 11389585284 + 8949160000 = 106722^2 + 94600^2 .

It is not an unprimeable number, because it can be changed into a prime (20338745281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1609947 + ... + 1622530.

Almost surely, 2^20338745284 is an apocalyptic number.

It is an amenable number.

20338745284 is an abundant number, since it is smaller than the sum of its proper divisors (21793372968).

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

20338745284 is a wasteful number, since it uses less digits than its factorization.

20338745284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232516 (or 3232503 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 46.

The spelling of 20338745284 in words is "twenty billion, three hundred thirty-eight million, seven hundred forty-five thousand, two hundred eighty-four".