20087158 has 24 divisors (see below), whose sum is σ = 37748592. Its totient is φ = 7946064.

The previous prime is 20087143. The next prime is 20087213. The reversal of 20087158 is 85178002.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 6610 + ... + 9157.

It is an arithmetic number, because the mean of its divisors is an integer number (1572858).

Almost surely, 2^20087158 is an apocalyptic number.

20087158 is a deficient number, since it is larger than the sum of its proper divisors (17661434).

20087158 is a wasteful number, since it uses less digits than its factorization.

20087158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15796 (or 15789 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 20087158 is about 4481.8699222534. The cubic root of 20087158 is about 271.8354956122.

The spelling of 20087158 in words is "twenty million, eighty-seven thousand, one hundred fifty-eight".