20396158 has 16 divisors (see below), whose sum is σ = 34099920. Its totient is φ = 9092736.

The previous prime is 20396153. The next prime is 20396179. The reversal of 20396158 is 85169302.

It is a super-2 number, since 2×20396158² = 832006522321928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20396153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15141 + ... + 16432.

It is an arithmetic number, because the mean of its divisors is an integer number (2131245).

Almost surely, 2^20396158 is an apocalyptic number.

20396158 is a deficient number, since it is larger than the sum of its proper divisors (13703762).

20396158 is a wasteful number, since it uses less digits than its factorization.

20396158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31611.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 20396158 is about 4516.2105796785. The cubic root of 20396158 is about 273.2222871675. Note that the first 4 decimals are identical.

The spelling of 20396158 in words is "twenty million, three hundred ninety-six thousand, one hundred fifty-eight".