8782919640 has 128 divisors (see below), whose sum is σ = 31937932800. Its totient is φ = 2129189760.

The previous prime is 8782919573. The next prime is 8782919653. The reversal of 8782919640 is 469192878.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357772 + ... + 381531.

It is an arithmetic number, because the mean of its divisors is an integer number (249515100).

Almost surely, 2^8782919640 is an apocalyptic number.

It is an amenable number.

8782919640 is an abundant number, since it is smaller than the sum of its proper divisors (23155013160).

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

8782919640 is a wasteful number, since it uses less digits than its factorization.

8782919640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739334 (or 739324 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 8782919640 is about 93717.2323535005. The cubic root of 8782919640 is about 2063.2236297206.

The spelling of 8782919640 in words is "eight billion, seven hundred eighty-two million, nine hundred nineteen thousand, six hundred forty".