20100023020 has 96 divisors (see below), whose sum is σ = 52816619520. Its totient is φ = 6242192640.

The previous prime is 20100022951. The next prime is 20100023087. The reversal of 20100023020 is 2032000102.

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 = 20100022988 and 20100023006.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 403021 + ... + 450139.

It is an arithmetic number, because the mean of its divisors is an integer number (550173120).

Almost surely, 2^20100023020 is an apocalyptic number.

20100023020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20100023020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26408309760).

20100023020 is an abundant number, since it is smaller than the sum of its proper divisors (32716596500).

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

20100023020 is a wasteful number, since it uses less digits than its factorization.

20100023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47423 (or 47421 counting only the distinct ones).

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

Adding to 20100023020 its reverse (2032000102), we get a palindrome (22132023122).

The spelling of 20100023020 in words is "twenty billion, one hundred million, twenty-three thousand, twenty".