243978022 has 8 divisors (see below), whose sum is σ = 366609672. Its totient is φ = 121774800.

The previous prime is 243978019. The next prime is 243978023. The reversal of 243978022 is 220879342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243978023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105679 + ... + 107962.

It is an arithmetic number, because the mean of its divisors is an integer number (45826209).

Almost surely, 2^243978022 is an apocalyptic number.

243978022 is a deficient number, since it is larger than the sum of its proper divisors (122631650).

243978022 is a wasteful number, since it uses less digits than its factorization.

243978022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214214.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 243978022 is about 15619.7958373341. The cubic root of 243978022 is about 624.8612146241.

The spelling of 243978022 in words is "two hundred forty-three million, nine hundred seventy-eight thousand, twenty-two".