243632886 has 64 divisors (see below), whose sum is σ = 578810880. Its totient is φ = 66890880.

The previous prime is 243632849. The next prime is 243632887. The reversal of 243632886 is 688236342.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243632887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 385791 + ... + 386421.

It is an arithmetic number, because the mean of its divisors is an integer number (9043920).

Almost surely, 2^243632886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243632886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289405440).

243632886 is an abundant number, since it is smaller than the sum of its proper divisors (335177994).

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

243632886 is a wasteful number, since it uses less digits than its factorization.

243632886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989.

The product of its digits is 331776, while the sum is 42.

The square root of 243632886 is about 15608.7438956503. The cubic root of 243632886 is about 624.5664286817.

The spelling of 243632886 in words is "two hundred forty-three million, six hundred thirty-two thousand, eight hundred eighty-six".