6236643240 has 192 divisors, whose sum is σ = 21178160640. Its totient is φ = 1589829120.

The previous prime is 6236643199. The next prime is 6236643241. The reversal of 6236643240 is 423466326.

6236643240 is a `hidden beast` number, since 6 + 2 + 3 + 6 + 643 + 2 + 4 + 0 = 666.

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 = 6236643195 and 6236643204.

It is not an unprimeable number, because it can be changed into a prime (6236643241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 922914 + ... + 929646.

It is an arithmetic number, because the mean of its divisors is an integer number (110302920).

Almost surely, 2^6236643240 is an apocalyptic number.

6236643240 is a gapful number since it is divisible by the number (60) 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 6236643240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10589080320).

6236643240 is an abundant number, since it is smaller than the sum of its proper divisors (14941517400).

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

6236643240 is a wasteful number, since it uses less digits than its factorization.

6236643240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6864 (or 6857 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The square root of 6236643240 is about 78972.4207556030. The cubic root of 6236643240 is about 1840.7026341425.

The spelling of 6236643240 in words is "six billion, two hundred thirty-six million, six hundred forty-three thousand, two hundred forty".