243695436 has 12 divisors (see below), whose sum is σ = 568622712. Its totient is φ = 81231808.

The previous prime is 243695411. The next prime is 243695437. The reversal of 243695436 is 634596342.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (243695437) 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, 10153965 + ... + 10153988.

It is an arithmetic number, because the mean of its divisors is an integer number (47385226).

Almost surely, 2^243695436 is an apocalyptic number.

It is an amenable number.

243695436 is an abundant number, since it is smaller than the sum of its proper divisors (324927276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243695436 is a wasteful number, since it uses less digits than its factorization.

243695436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20307960 (or 20307958 counting only the distinct ones).

The product of its digits is 466560, while the sum is 42.

The square root of 243695436 is about 15610.7474516757. The cubic root of 243695436 is about 624.6198742406.

The spelling of 243695436 in words is "two hundred forty-three million, six hundred ninety-five thousand, four hundred thirty-six".