20238115392 has 1008 divisors, whose sum is σ = 75887884800. Its totient is φ = 5109350400.

The previous prime is 20238115379. The next prime is 20238115433. The reversal of 20238115392 is 29351183202.

20238115392 is a `hidden beast` number, since 20 + 23 + 81 + 1 + 539 + 2 = 666.

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

It is a zygodrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 652842417 + ... + 652842447.

It is an arithmetic number, because the mean of its divisors is an integer number (75285600).

Almost surely, 2^20238115392 is an apocalyptic number.

20238115392 is a gapful number since it is divisible by the number (22) 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 20238115392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37943942400).

20238115392 is an abundant number, since it is smaller than the sum of its proper divisors (55649769408).

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

20238115392 is a wasteful number, since it uses less digits than its factorization.

20238115392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 20238115392 its reverse (29351183202), we get a palindrome (49589298594).

The spelling of 20238115392 in words is "twenty billion, two hundred thirty-eight million, one hundred fifteen thousand, three hundred ninety-two".