243347090 has 16 divisors (see below), whose sum is σ = 500599872. Its totient is φ = 83433264.

The previous prime is 243347089. The next prime is 243347123. The reversal of 243347090 is 90743342.

It is a super-2 number, since 2×243347090² = 118435612422936200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1738124 + ... + 1738263.

It is an arithmetic number, because the mean of its divisors is an integer number (31287492).

Almost surely, 2^243347090 is an apocalyptic number.

243347090 is an abundant number, since it is smaller than the sum of its proper divisors (257252782).

243347090 is a wasteful number, since it uses less digits than its factorization.

243347090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476401.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 243347090 is about 15599.5862124609. The cubic root of 243347090 is about 624.3221151546.

The spelling of 243347090 in words is "two hundred forty-three million, three hundred forty-seven thousand, ninety".