8363172240 has 200 divisors, whose sum is σ = 30575751360. Its totient is φ = 2112770304.

The previous prime is 8363172239. The next prime is 8363172353. The reversal of 8363172240 is 422713638.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 8363172195 and 8363172204.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 89157 + ... + 157083.

Almost surely, 2^8363172240 is an apocalyptic number.

8363172240 is a gapful number since it is divisible by the number (80) 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 8363172240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15287875680).

8363172240 is an abundant number, since it is smaller than the sum of its proper divisors (22212579120).

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

8363172240 is a wasteful number, since it uses less digits than its factorization.

8363172240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67971 (or 67956 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 8363172240 is about 91450.3813004626. The cubic root of 8363172240 is about 2029.8175995043.

Adding to 8363172240 its reverse (422713638), we get a palindrome (8785885878).

The spelling of 8363172240 in words is "eight billion, three hundred sixty-three million, one hundred seventy-two thousand, two hundred forty".