20023132320 has 144 divisors (see below), whose sum is σ = 69918200352. Its totient is φ = 5215311360.

The previous prime is 20023132303. The next prime is 20023132369. The reversal of 20023132320 is 2323132002.

It is a happy number.

20023132320 is a `hidden beast` number, since 200 + 231 + 3 + 232 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20023132293 and 20023132302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99766 + ... + 223605.

It is an arithmetic number, because the mean of its divisors is an integer number (485543058).

Almost surely, 2^20023132320 is an apocalyptic number.

20023132320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20023132320 is an abundant number, since it is smaller than the sum of its proper divisors (49895068032).

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

20023132320 is a wasteful number, since it uses less digits than its factorization.

20023132320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323435 (or 323424 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20023132320 its reverse (2323132002), we get a palindrome (22346264322).

The spelling of 20023132320 in words is "twenty billion, twenty-three million, one hundred thirty-two thousand, three hundred twenty".