243746836 has 6 divisors (see below), whose sum is σ = 426556970. Its totient is φ = 121873416.

The previous prime is 243746819. The next prime is 243746843. The reversal of 243746836 is 638647342.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 235008900 + 8737936 = 15330^2 + 2956^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243746792 and 243746801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30468351 + ... + 30468358.

Almost surely, 2^243746836 is an apocalyptic number.

It is an amenable number.

243746836 is a deficient number, since it is larger than the sum of its proper divisors (182810134).

243746836 is a wasteful number, since it uses less digits than its factorization.

243746836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60936713 (or 60936711 counting only the distinct ones).

The product of its digits is 580608, while the sum is 43.

The square root of 243746836 is about 15612.3936665714. The cubic root of 243746836 is about 624.6637858885.

The spelling of 243746836 in words is "two hundred forty-three million, seven hundred forty-six thousand, eight hundred thirty-six".