8248392640 has 56 divisors (see below), whose sum is σ = 19910602800. Its totient is φ = 3254151168.

The previous prime is 8248392631. The next prime is 8248392671. The reversal of 8248392640 is 462938428.

It is a super-2 number, since 2×8248392640² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153190 + ... + 199909.

Almost surely, 2^8248392640 is an apocalyptic number.

8248392640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8248392640 is an abundant number, since it is smaller than the sum of its proper divisors (11662210160).

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

8248392640 is a wasteful number, since it uses less digits than its factorization.

8248392640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353189 (or 353179 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The square root of 8248392640 is about 90820.6619663169. The cubic root of 8248392640 is about 2020.4887749684.

The spelling of 8248392640 in words is "eight billion, two hundred forty-eight million, three hundred ninety-two thousand, six hundred forty".