8457727890 has 32 divisors (see below), whose sum is σ = 20304509760. Its totient is φ = 2254731584.

The previous prime is 8457727867. The next prime is 8457727891. The reversal of 8457727890 is 987277548.

It is a super-2 number, since 2×8457727890² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8457727890.

It is not an unprimeable number, because it can be changed into a prime (8457727891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67081 + ... + 146339.

It is an arithmetic number, because the mean of its divisors is an integer number (634515930).

Almost surely, 2^8457727890 is an apocalyptic number.

8457727890 is an abundant number, since it is smaller than the sum of its proper divisors (11846781870).

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

8457727890 is a wasteful number, since it uses less digits than its factorization.

8457727890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82826.

The product of its (nonzero) digits is 7902720, while the sum is 57.

The square root of 8457727890 is about 91965.9061283039. The cubic root of 8457727890 is about 2037.4387864230.

The spelling of 8457727890 in words is "eight billion, four hundred fifty-seven million, seven hundred twenty-seven thousand, eight hundred ninety".