243427886 has 16 divisors (see below), whose sum is σ = 413926800. Its totient is φ = 106437888.

The previous prime is 243427871. The next prime is 243427897. The reversal of 243427886 is 688724342.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245891 + ... + 246878.

It is an arithmetic number, because the mean of its divisors is an integer number (25870425).

Almost surely, 2^243427886 is an apocalyptic number.

243427886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

243427886 is a deficient number, since it is larger than the sum of its proper divisors (170498914).

243427886 is a wasteful number, since it uses less digits than its factorization.

243427886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492803.

The product of its digits is 516096, while the sum is 44.

The square root of 243427886 is about 15602.1756816157. The cubic root of 243427886 is about 624.3912032323.

The spelling of 243427886 in words is "two hundred forty-three million, four hundred twenty-seven thousand, eight hundred eighty-six".