20324317620 has 48 divisors (see below), whose sum is σ = 56916433728. Its totient is φ = 5419023360.

The previous prime is 20324317603. The next prime is 20324317639. The reversal of 20324317620 is 2671342302.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468907 + ... + 510413.

It is an arithmetic number, because the mean of its divisors is an integer number (1185759036).

Almost surely, 2^20324317620 is an apocalyptic number.

20324317620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20324317620 is an abundant number, since it is smaller than the sum of its proper divisors (36592116108).

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

20324317620 is a wasteful number, since it uses less digits than its factorization.

20324317620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49680 (or 49678 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

Adding to 20324317620 its reverse (2671342302), we get a palindrome (22995659922).

The spelling of 20324317620 in words is "twenty billion, three hundred twenty-four million, three hundred seventeen thousand, six hundred twenty".