20232447784 has 16 divisors (see below), whose sum is σ = 37987604820. Its totient is φ = 10102419840.

The previous prime is 20232447761. The next prime is 20232447797. The reversal of 20232447784 is 48774423202.

It can be written as a sum of positive squares in 2 ways, for example, as 19878180100 + 354267684 = 140990^2 + 18822^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20232447784.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719277 + ... + 1731004.

Almost surely, 2^20232447784 is an apocalyptic number.

It is an amenable number.

20232447784 is a deficient number, since it is larger than the sum of its proper divisors (17755157036).

20232447784 is a wasteful number, since it uses less digits than its factorization.

20232447784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451020 (or 3451016 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 43.

The spelling of 20232447784 in words is "twenty billion, two hundred thirty-two million, four hundred forty-seven thousand, seven hundred eighty-four".