20162393 has 4 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 20003508.

The previous prime is 20162371. The next prime is 20162413. The reversal of 20162393 is 39326102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20162393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20162333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79253 + ... + 79506.

It is an arithmetic number, because the mean of its divisors is an integer number (5080320).

Almost surely, 2^20162393 is an apocalyptic number.

It is an amenable number.

20162393 is a deficient number, since it is larger than the sum of its proper divisors (158887).

20162393 is a wasteful number, since it uses less digits than its factorization.

20162393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158886.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 20162393 is about 4490.2553379513. The cubic root of 20162393 is about 272.1744528579.

Adding to 20162393 its reverse (39326102), we get a palindrome (59488495).

The spelling of 20162393 in words is "twenty million, one hundred sixty-two thousand, three hundred ninety-three".