20330143240 has 32 divisors (see below), whose sum is σ = 49901261760. Its totient is φ = 7392779200.

The previous prime is 20330143199. The next prime is 20330143259. The reversal of 20330143240 is 4234103302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 23101996 + ... + 23102875.

It is an arithmetic number, because the mean of its divisors is an integer number (1559414430).

Almost surely, 2^20330143240 is an apocalyptic number.

20330143240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20330143240 is an abundant number, since it is smaller than the sum of its proper divisors (29571118520).

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

20330143240 is a wasteful number, since it uses less digits than its factorization.

20330143240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46204893 (or 46204889 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20330143240 its reverse (4234103302), we get a palindrome (24564246542).

The spelling of 20330143240 in words is "twenty billion, three hundred thirty million, one hundred forty-three thousand, two hundred forty".