243972630 has 96 divisors (see below), whose sum is σ = 695249568. Its totient is φ = 58867200.

The previous prime is 243972613. The next prime is 243972637. The reversal of 243972630 is 36279342.

It is a happy number.

243972630 is a `hidden beast` number, since 2 + 4 + 397 + 263 + 0 = 666.

243972630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243972637) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 277752 + ... + 278628.

It is an arithmetic number, because the mean of its divisors is an integer number (7242183).

Almost surely, 2^243972630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243972630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347624784).

243972630 is an abundant number, since it is smaller than the sum of its proper divisors (451276938).

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

243972630 is a wasteful number, since it uses less digits than its factorization.

243972630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182 (or 1179 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 243972630 is about 15619.6232348927. The cubic root of 243972630 is about 624.8566113727.

The spelling of 243972630 in words is "two hundred forty-three million, nine hundred seventy-two thousand, six hundred thirty".