243444285 has 80 divisors (see below), whose sum is σ = 510592896. Its totient is φ = 108646272.

The previous prime is 243444263. The next prime is 243444319. The reversal of 243444285 is 582444342.

243444285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243444285 - 2¹⁸ = 243182141 is a prime.

It is a super-2 number, since 2×243444285² = 118530239798322450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 120907 + ... + 122903.

Almost surely, 2^243444285 is an apocalyptic number.

It is an amenable number.

243444285 is an abundant number, since it is smaller than the sum of its proper divisors (267148611).

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

243444285 is a wasteful number, since it uses less digits than its factorization.

243444285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064 (or 2055 counting only the distinct ones).

The product of its digits is 122880, while the sum is 36.

The square root of 243444285 is about 15602.7012084446. The cubic root of 243444285 is about 624.4052240327.

The spelling of 243444285 in words is "two hundred forty-three million, four hundred forty-four thousand, two hundred eighty-five".