243250890 has 16 divisors (see below), whose sum is σ = 583802208. Its totient is φ = 64866896.

The previous prime is 243250879. The next prime is 243250949. The reversal of 243250890 is 98052342.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4054152 + ... + 4054211.

It is an arithmetic number, because the mean of its divisors is an integer number (36487638).

Almost surely, 2^243250890 is an apocalyptic number.

243250890 is an abundant number, since it is smaller than the sum of its proper divisors (340551318).

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

243250890 is a wasteful number, since it uses less digits than its factorization.

243250890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8108373.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 243250890 is about 15596.5024925462. The cubic root of 243250890 is about 624.2398352809.

The spelling of 243250890 in words is "two hundred forty-three million, two hundred fifty thousand, eight hundred ninety".