8219501240 has 64 divisors (see below), whose sum is σ = 18977988960. Its totient is φ = 3202017280.

The previous prime is 8219501221. The next prime is 8219501263. The reversal of 8219501240 is 421059128.

It is a junction number, because it is equal to n+sod(n) for n = 8219501197 and 8219501206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1007819 + ... + 1015941.

Almost surely, 2^8219501240 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 8219501240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9488994480).

8219501240 is an abundant number, since it is smaller than the sum of its proper divisors (10758487720).

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

8219501240 is a wasteful number, since it uses less digits than its factorization.

8219501240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8792 (or 8788 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 8219501240 is about 90661.4650223567. The cubic root of 8219501240 is about 2018.1269799410.

The spelling of 8219501240 in words is "eight billion, two hundred nineteen million, five hundred one thousand, two hundred forty".