20840190192 has 160 divisors (see below), whose sum is σ = 61993056000. Its totient is φ = 6695136000.

The previous prime is 20840190187. The next prime is 20840190211. The reversal of 20840190192 is 29109104802.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 9257067 + ... + 9259317.

It is an arithmetic number, because the mean of its divisors is an integer number (387456600).

Almost surely, 2^20840190192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20840190192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30996528000).

20840190192 is an abundant number, since it is smaller than the sum of its proper divisors (41152865808).

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

20840190192 is a wasteful number, since it uses less digits than its factorization.

20840190192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036 (or 3024 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

Adding to 20840190192 its reverse (29109104802), we get a palindrome (49949294994).

The spelling of 20840190192 in words is "twenty billion, eight hundred forty million, one hundred ninety thousand, one hundred ninety-two".