20168158 has 8 divisors (see below), whose sum is σ = 31844520. Its totient is φ = 9553320.

The previous prime is 20168149. The next prime is 20168173. The reversal of 20168158 is 85186102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20168158² = 813509194225928, which contains 22 as substring.

It is a plaindrome in base 16.

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 3 ways as a sum of consecutive naturals, for example, 265333 + ... + 265408.

It is an arithmetic number, because the mean of its divisors is an integer number (3980565).

Almost surely, 2^20168158 is an apocalyptic number.

20168158 is a deficient number, since it is larger than the sum of its proper divisors (11676362).

20168158 is a wasteful number, since it uses less digits than its factorization.

20168158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530762.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 20168158 is about 4490.8972377466. The cubic root of 20168158 is about 272.2003911843.

The spelling of 20168158 in words is "twenty million, one hundred sixty-eight thousand, one hundred fifty-eight".