87990158 has 16 divisors (see below), whose sum is σ = 134387424. Its totient is φ = 43199520.

The previous prime is 87990143. The next prime is 87990163. The reversal of 87990158 is 85109978.

It is a happy number.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38216 + ... + 40452.

It is an arithmetic number, because the mean of its divisors is an integer number (8399214).

Almost surely, 2^87990158 is an apocalyptic number.

87990158 is a deficient number, since it is larger than the sum of its proper divisors (46397266).

87990158 is a wasteful number, since it uses less digits than its factorization.

87990158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 87990158 is about 9380.3069246161. The cubic root of 87990158 is about 444.7794353653.

The spelling of 87990158 in words is "eighty-seven million, nine hundred ninety thousand, one hundred fifty-eight".