243726940 has 12 divisors (see below), whose sum is σ = 511826616. Its totient is φ = 97490768.

The previous prime is 243726911. The next prime is 243726947. The reversal of 243726940 is 49627342.

It is a self number, because there is not a number n which added to its sum of digits gives 243726940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243726947) 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, 6093154 + ... + 6093193.

It is an arithmetic number, because the mean of its divisors is an integer number (42652218).

Almost surely, 2^243726940 is an apocalyptic number.

243726940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243726940 is an abundant number, since it is smaller than the sum of its proper divisors (268099676).

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

243726940 is a wasteful number, since it uses less digits than its factorization.

243726940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12186356 (or 12186354 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 243726940 is about 15611.7564674831. The cubic root of 243726940 is about 624.6467892250.

The spelling of 243726940 in words is "two hundred forty-three million, seven hundred twenty-six thousand, nine hundred forty".