87131486 has 32 divisors (see below), whose sum is σ = 147692160. Its totient is φ = 38271744.

The previous prime is 87131479. The next prime is 87131497. The reversal of 87131486 is 68413178.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 54251 + ... + 55833.

It is an arithmetic number, because the mean of its divisors is an integer number (4615380).

Almost surely, 2^87131486 is an apocalyptic number.

87131486 is a deficient number, since it is larger than the sum of its proper divisors (60560674).

87131486 is a wasteful number, since it uses less digits than its factorization.

87131486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700.

The product of its digits is 32256, while the sum is 38.

The square root of 87131486 is about 9334.4247814207. The cubic root of 87131486 is about 443.3278761396.

The spelling of 87131486 in words is "eighty-seven million, one hundred thirty-one thousand, four hundred eighty-six".