8117629240 has 64 divisors (see below), whose sum is σ = 20889446400. Its totient is φ = 2781115008.

The previous prime is 8117629231. The next prime is 8117629243. The reversal of 8117629240 is 429267118.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 8117629193 and 8117629202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8117629243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392847 + ... + 412993.

It is an arithmetic number, because the mean of its divisors is an integer number (326397600).

Almost surely, 2^8117629240 is an apocalyptic number.

It is an amenable number.

8117629240 is an abundant number, since it is smaller than the sum of its proper divisors (12771817160).

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

8117629240 is a wasteful number, since it uses less digits than its factorization.

8117629240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21604 (or 21600 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 8117629240 is about 90097.8869896514. The cubic root of 8117629240 is about 2009.7547814343.

8117629240 divided by its sum of digits (40) gives a triangular number (202940731 = T₂₀₁₄₆).

The spelling of 8117629240 in words is "eight billion, one hundred seventeen million, six hundred twenty-nine thousand, two hundred forty".