20020100320 has 96 divisors (see below), whose sum is σ = 54632473056. Its totient is φ = 6851788800.

The previous prime is 20020100299. The next prime is 20020100357. The reversal of 20020100320 is 2300102002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20020100297 and 20020100306.

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, 304641 + ... + 364480.

It is an arithmetic number, because the mean of its divisors is an integer number (569088261).

Almost surely, 2^20020100320 is an apocalyptic number.

20020100320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020100320 is an abundant number, since it is smaller than the sum of its proper divisors (34612372736).

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

20020100320 is a wasteful number, since it uses less digits than its factorization.

20020100320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669164 (or 669156 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 20020100320 its reverse (2300102002), we get a palindrome (22320202322).

The spelling of 20020100320 in words is "twenty billion, twenty million, one hundred thousand, three hundred twenty".