20302032540 has 48 divisors (see below), whose sum is σ = 57014429472. Its totient is φ = 5397805056.

The previous prime is 20302032539. The next prime is 20302032547. The reversal of 20302032540 is 4523020302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302032547) 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 15 ways as a sum of consecutive naturals, for example, 481809 + ... + 522248.

It is an arithmetic number, because the mean of its divisors is an integer number (1187800614).

Almost surely, 2^20302032540 is an apocalyptic number.

20302032540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20302032540 is an abundant number, since it is smaller than the sum of its proper divisors (36712396932).

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

20302032540 is a wasteful number, since it uses less digits than its factorization.

20302032540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004406 (or 1004404 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

Adding to 20302032540 its reverse (4523020302), we get a palindrome (24825052842).

The spelling of 20302032540 in words is "twenty billion, three hundred two million, thirty-two thousand, five hundred forty".