32400243 has 20 divisors (see below), whose sum is σ = 48612960. Its totient is φ = 21505392.

The previous prime is 32400241. The next prime is 32400259. The reversal of 32400243 is 34200423.

It is not a de Polignac number, because 32400243 - 2¹ = 32400241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32400241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21046 + ... + 22532.

It is an arithmetic number, because the mean of its divisors is an integer number (2430648).

Almost surely, 2^32400243 is an apocalyptic number.

32400243 is a deficient number, since it is larger than the sum of its proper divisors (16212717).

32400243 is a wasteful number, since it uses less digits than its factorization.

32400243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768 (or 1759 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 32400243 is about 5692.1211336373. The cubic root of 32400243 is about 318.7983677467.

Adding to 32400243 its reverse (34200423), we get a palindrome (66600666).

The spelling of 32400243 in words is "thirty-two million, four hundred thousand, two hundred forty-three".