20620207320 has 32 divisors (see below), whose sum is σ = 61860622320. Its totient is φ = 5498721920.

The previous prime is 20620207313. The next prime is 20620207351. The reversal of 20620207320 is 2370202602.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 85917411 + ... + 85917650.

Almost surely, 2^20620207320 is an apocalyptic number.

20620207320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20620207320 is an abundant number, since it is smaller than the sum of its proper divisors (41240415000).

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

20620207320 is a wasteful number, since it uses less digits than its factorization.

20620207320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171835075 (or 171835071 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

Adding to 20620207320 its reverse (2370202602), we get a palindrome (22990409922).

The spelling of 20620207320 in words is "twenty billion, six hundred twenty million, two hundred seven thousand, three hundred twenty".