8008197840 has 100 divisors (see below), whose sum is σ = 27813680004. Its totient is φ = 2135517696.

The previous prime is 8008197833. The next prime is 8008197907. The reversal of 8008197840 is 487918008.

It can be written as a sum of positive squares in 2 ways, for example, as 4302310464 + 3705887376 = 65592^2 + 60876^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 611437 + ... + 624396.

Almost surely, 2^8008197840 is an apocalyptic number.

8008197840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8008197840 is an abundant number, since it is smaller than the sum of its proper divisors (19805482164).

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

8008197840 is a wasteful number, since it uses less digits than its factorization.

8008197840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235858 (or 1235843 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 8008197840 is about 89488.5346846176. The cubic root of 8008197840 is about 2000.6829201168.

The spelling of 8008197840 in words is "eight billion, eight million, one hundred ninety-seven thousand, eight hundred forty".