20028143120 has 20 divisors (see below), whose sum is σ = 46565432940. Its totient is φ = 8011257216.

The previous prime is 20028143119. The next prime is 20028143203. The reversal of 20028143120 is 2134182002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11443008784 + 8585134336 = 106972^2 + 92656^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×20028143120² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125175815 + ... + 125175974.

It is an arithmetic number, because the mean of its divisors is an integer number (2328271647).

Almost surely, 2^20028143120 is an apocalyptic number.

20028143120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20028143120 is an abundant number, since it is smaller than the sum of its proper divisors (26537289820).

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

20028143120 is a wasteful number, since it uses less digits than its factorization.

20028143120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250351802 (or 250351796 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The spelling of 20028143120 in words is "twenty billion, twenty-eight million, one hundred forty-three thousand, one hundred twenty".