87191048 has 32 divisors (see below), whose sum is σ = 187401600. Its totient is φ = 37254912.

The previous prime is 87191033. The next prime is 87191059. The reversal of 87191048 is 84019178.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17936 + ... + 22272.

It is an arithmetic number, because the mean of its divisors is an integer number (5856300).

Almost surely, 2^87191048 is an apocalyptic number.

It is an amenable number.

87191048 is an abundant number, since it is smaller than the sum of its proper divisors (100210552).

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

87191048 is a wasteful number, since it uses less digits than its factorization.

87191048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4709 (or 4705 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 87191048 is about 9337.6146847040. The cubic root of 87191048 is about 443.4288709374.

It can be divided in two parts, 871 and 91048, that added together give a palindrome (91919).

The spelling of 87191048 in words is "eighty-seven million, one hundred ninety-one thousand, forty-eight".