8557507740 has 48 divisors (see below), whose sum is σ = 24025323168. Its totient is φ = 2275878144.

The previous prime is 8557507729. The next prime is 8557507759. The reversal of 8557507740 is 477057558.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8557507740.

It is a congruent number.

It is an unprimeable number.

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, 168807 + ... + 213566.

It is an arithmetic number, because the mean of its divisors is an integer number (500527566).

Almost surely, 2^8557507740 is an apocalyptic number.

It is an amenable number.

8557507740 is an abundant number, since it is smaller than the sum of its proper divisors (15467815428).

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

8557507740 is a wasteful number, since it uses less digits than its factorization.

8557507740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382758 (or 382756 counting only the distinct ones).

The product of its (nonzero) digits is 1372000, while the sum is 48.

The square root of 8557507740 is about 92506.7983447703. The cubic root of 8557507740 is about 2045.4196957438.

The spelling of 8557507740 in words is "eight billion, five hundred fifty-seven million, five hundred seven thousand, seven hundred forty".