243434664 has 48 divisors (see below), whose sum is σ = 719241120. Its totient is φ = 73767840.

The previous prime is 243434663. The next prime is 243434677. The reversal of 243434664 is 466434342.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (243434663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152892 + ... + 154475.

It is an arithmetic number, because the mean of its divisors is an integer number (14984190).

Almost surely, 2^243434664 is an apocalyptic number.

243434664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243434664 is an abundant number, since it is smaller than the sum of its proper divisors (475806456).

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

243434664 is a wasteful number, since it uses less digits than its factorization.

243434664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307390 (or 307383 counting only the distinct ones).

The product of its digits is 165888, while the sum is 36.

The square root of 243434664 is about 15602.3928933994. The cubic root of 243434664 is about 624.3969983562.

The spelling of 243434664 in words is "two hundred forty-three million, four hundred thirty-four thousand, six hundred sixty-four".