87831490 has 16 divisors (see below), whose sum is σ = 166417920. Its totient is φ = 33283440.

The previous prime is 87831467. The next prime is 87831511. The reversal of 87831490 is 9413878.

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 7 ways as a sum of consecutive naturals, for example, 230946 + ... + 231325.

It is an arithmetic number, because the mean of its divisors is an integer number (10401120).

Almost surely, 2^87831490 is an apocalyptic number.

87831490 is a deficient number, since it is larger than the sum of its proper divisors (78586430).

87831490 is a wasteful number, since it uses less digits than its factorization.

87831490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462297.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 87831490 is about 9371.8456026548. The cubic root of 87831490 is about 444.5119254250.

The spelling of 87831490 in words is "eighty-seven million, eight hundred thirty-one thousand, four hundred ninety".