861027488 has 24 divisors (see below), whose sum is σ = 1708503552. Its totient is φ = 427121856.

The previous prime is 861027473. The next prime is 861027521. The reversal of 861027488 is 884720168.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101870 + ... + 109997.

It is an arithmetic number, because the mean of its divisors is an integer number (71187648).

Almost surely, 2^861027488 is an apocalyptic number.

It is an amenable number.

861027488 is a deficient number, since it is larger than the sum of its proper divisors (847476064).

861027488 is a wasteful number, since it uses less digits than its factorization.

861027488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212004 (or 211996 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 861027488 is about 29343.2698927710. The cubic root of 861027488 is about 951.3471149058.

The spelling of 861027488 in words is "eight hundred sixty-one million, twenty-seven thousand, four hundred eighty-eight".