8747907920 has 30 divisors (see below), whose sum is σ = 20340831102. Its totient is φ = 3498828544.

The previous prime is 8747907907. The next prime is 8747907967. The reversal of 8747907920 is 297097478.

It can be written as a sum of positive squares in 3 ways, for example, as 4439823424 + 4308084496 = 66632^2 + 65636^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 831332 + ... + 841788.

Almost surely, 2^8747907920 is an apocalyptic number.

8747907920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8747907920 is an abundant number, since it is smaller than the sum of its proper divisors (11592923182).

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

8747907920 is an frugal number, since it uses more digits than its factorization.

8747907920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20927 (or 10464 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 53.

The square root of 8747907920 is about 93530.2513628612. The cubic root of 8747907920 is about 2060.4784071270.

The spelling of 8747907920 in words is "eight billion, seven hundred forty-seven million, nine hundred seven thousand, nine hundred twenty".