20365234 has 4 divisors (see below), whose sum is σ = 30547854. Its totient is φ = 10182616.

The previous prime is 20365229. The next prime is 20365237. The reversal of 20365234 is 43256302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43256302 = 2 ⋅21628151.

It can be written as a sum of positive squares in only one way, i.e., 14040009 + 6325225 = 3747^2 + 2515^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20365199 and 20365208.

It is not an unprimeable number, because it can be changed into a prime (20365237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5091307 + ... + 5091310.

Almost surely, 2^20365234 is an apocalyptic number.

20365234 is a deficient number, since it is larger than the sum of its proper divisors (10182620).

20365234 is a wasteful number, since it uses less digits than its factorization.

20365234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10182619.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 20365234 is about 4512.7856142299. The cubic root of 20365234 is about 273.0841337024.

The spelling of 20365234 in words is "twenty million, three hundred sixty-five thousand, two hundred thirty-four".