20243395 has 4 divisors (see below), whose sum is σ = 24292080. Its totient is φ = 16194712.

The previous prime is 20243387. The next prime is 20243407. The reversal of 20243395 is 59334202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59334202 = 2 ⋅29667101.

It is a cyclic number.

It is not a de Polignac number, because 20243395 - 2³ = 20243387 is a prime.

It is a super-2 number, since 2×20243395² = 819590082252050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2024335 + ... + 2024344.

It is an arithmetic number, because the mean of its divisors is an integer number (6073020).

Almost surely, 2^20243395 is an apocalyptic number.

20243395 is a deficient number, since it is larger than the sum of its proper divisors (4048685).

20243395 is an equidigital number, since it uses as much as digits as its factorization.

20243395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048684.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 20243395 is about 4499.2660512577. The cubic root of 20243395 is about 272.5384509330.

Adding to 20243395 its reverse (59334202), we get a palindrome (79577597).

The spelling of 20243395 in words is "twenty million, two hundred forty-three thousand, three hundred ninety-five".