240636433 has 4 divisors (see below), whose sum is σ = 241643520. Its totient is φ = 239629348.

The previous prime is 240636391. The next prime is 240636457. The reversal of 240636433 is 334636042.

240636433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-240636433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240636395 and 240636404.

It is not an unprimeable number, because it can be changed into a prime (240633433) 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, 503185 + ... + 503662.

It is an arithmetic number, because the mean of its divisors is an integer number (60410880).

Almost surely, 2^240636433 is an apocalyptic number.

It is an amenable number.

240636433 is a deficient number, since it is larger than the sum of its proper divisors (1007087).

240636433 is a wasteful number, since it uses less digits than its factorization.

240636433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007086.

The product of its (nonzero) digits is 31104, while the sum is 31.

The square root of 240636433 is about 15512.4605720692. The cubic root of 240636433 is about 621.9953344839.

The spelling of 240636433 in words is "two hundred forty million, six hundred thirty-six thousand, four hundred thirty-three".