20238130836 has 144 divisors (see below), whose sum is σ = 66554062848. Its totient is φ = 5028091200.

The previous prime is 20238130823. The next prime is 20238130873. The reversal of 20238130836 is 63803183202.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20238130836.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94960 + ... + 222471.

It is an arithmetic number, because the mean of its divisors is an integer number (462180992).

Almost surely, 2^20238130836 is an apocalyptic number.

It is an amenable number.

20238130836 is an abundant number, since it is smaller than the sum of its proper divisors (46315932012).

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

20238130836 is a wasteful number, since it uses less digits than its factorization.

20238130836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317482 (or 317477 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 20238130836 in words is "twenty billion, two hundred thirty-eight million, one hundred thirty thousand, eight hundred thirty-six".