20365158 has 32 divisors (see below), whose sum is σ = 44945280. Its totient is φ = 6100160.

The previous prime is 20365157. The next prime is 20365193. The reversal of 20365158 is 85156302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20365157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4141 + ... + 7607.

It is an arithmetic number, because the mean of its divisors is an integer number (1404540).

Almost surely, 2^20365158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20365158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22472640).

20365158 is an abundant number, since it is smaller than the sum of its proper divisors (24580122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20365158 is a wasteful number, since it uses less digits than its factorization.

20365158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 20365158 is about 4512.7771937023. Note that the first 3 decimals coincide. The cubic root of 20365158 is about 273.0837939990.

The spelling of 20365158 in words is "twenty million, three hundred sixty-five thousand, one hundred fifty-eight".