20232405 has 12 divisors (see below), whose sum is σ = 35069580. Its totient is φ = 10790592.

The previous prime is 20232391. The next prime is 20232409. The reversal of 20232405 is 50423202.

It can be written as a sum of positive squares in 2 ways, for example, as 9381969 + 10850436 = 3063^2 + 3294^2 .

It is not a de Polignac number, because 20232405 - 2¹² = 20228309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232409) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 224760 + ... + 224849.

It is an arithmetic number, because the mean of its divisors is an integer number (2922465).

Almost surely, 2^20232405 is an apocalyptic number.

It is an amenable number.

20232405 is a deficient number, since it is larger than the sum of its proper divisors (14837175).

20232405 is a wasteful number, since it uses less digits than its factorization.

20232405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449620 (or 449617 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 20232405 is about 4498.0445751460. The cubic root of 20232405 is about 272.4891222547.

Adding to 20232405 its reverse (50423202), we get a palindrome (70655607).

The spelling of 20232405 in words is "twenty million, two hundred thirty-two thousand, four hundred five".