20392228660 has 24 divisors (see below), whose sum is σ = 42830643240. Its totient is φ = 8155565184.

The previous prime is 20392228639. The next prime is 20392228663. The reversal of 20392228660 is 6682229302.

It can be written as a sum of positive squares in 4 ways, for example, as 972691344 + 19419537316 = 31188^2 + 139354^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20392228663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48246 + ... + 207634.

It is an arithmetic number, because the mean of its divisors is an integer number (1784610135).

Almost surely, 2^20392228660 is an apocalyptic number.

20392228660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20392228660 is an abundant number, since it is smaller than the sum of its proper divisors (22438414580).

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

20392228660 is a wasteful number, since it uses less digits than its factorization.

20392228660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165795 (or 165793 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 20392228660 in words is "twenty billion, three hundred ninety-two million, two hundred twenty-eight thousand, six hundred sixty".