243068140 has 192 divisors, whose sum is σ = 667699200. Its totient is φ = 72382464.

The previous prime is 243068099. The next prime is 243068143. The reversal of 243068140 is 41860342.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 243068099 and 243068108.

It is not an unprimeable number, because it can be changed into a prime (243068143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1774152 + ... + 1774288.

It is an arithmetic number, because the mean of its divisors is an integer number (3477600).

Almost surely, 2^243068140 is an apocalyptic number.

243068140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243068140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333849600).

243068140 is an abundant number, since it is smaller than the sum of its proper divisors (424631060).

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

243068140 is a wasteful number, since it uses less digits than its factorization.

243068140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 243068140 is about 15590.6427064441. The cubic root of 243068140 is about 624.0834694117.

The spelling of 243068140 in words is "two hundred forty-three million, sixty-eight thousand, one hundred forty".