20324342240 has 24 divisors (see below), whose sum is σ = 48016258920. Its totient is φ = 8129736832.

The previous prime is 20324342221. The next prime is 20324342261. The reversal of 20324342240 is 4224342302.

It is a happy number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 63513410 + ... + 63513729.

It is an arithmetic number, because the mean of its divisors is an integer number (2000677455).

Almost surely, 2^20324342240 is an apocalyptic number.

20324342240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20324342240 is an abundant number, since it is smaller than the sum of its proper divisors (27691916680).

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

20324342240 is a wasteful number, since it uses less digits than its factorization.

20324342240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127027154 (or 127027146 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 20324342240 its reverse (4224342302), we get a palindrome (24548684542).

The spelling of 20324342240 in words is "twenty billion, three hundred twenty-four million, three hundred forty-two thousand, two hundred forty".