8928499840 has 96 divisors (see below), whose sum is σ = 23113174500. Its totient is φ = 3296636928.

The previous prime is 8928499831. The next prime is 8928499843. The reversal of 8928499840 is 489948298.

It can be written as a sum of positive squares in 6 ways, for example, as 2234641984 + 6693857856 = 47272^2 + 81816^2 .

It is not an unprimeable number, because it can be changed into a prime (8928499843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66886 + ... + 149434.

Almost surely, 2^8928499840 is an apocalyptic number.

8928499840 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 8928499840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11556587250).

8928499840 is an abundant number, since it is smaller than the sum of its proper divisors (14184674660).

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

8928499840 is a wasteful number, since it uses less digits than its factorization.

8928499840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82594 (or 82569 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 61.

The square root of 8928499840 is about 94490.7394404341. The cubic root of 8928499840 is about 2074.5607888318.

The spelling of 8928499840 in words is "eight billion, nine hundred twenty-eight million, four hundred ninety-nine thousand, eight hundred forty".