243051240 has 32 divisors (see below), whose sum is σ = 729154080. Its totient is φ = 64813632.

The previous prime is 243051223. The next prime is 243051293. The reversal of 243051240 is 42150342.

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, 1012594 + ... + 1012833.

It is an arithmetic number, because the mean of its divisors is an integer number (22786065).

Almost surely, 2^243051240 is an apocalyptic number.

243051240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243051240 is an abundant number, since it is smaller than the sum of its proper divisors (486102840).

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

243051240 is a wasteful number, since it uses less digits than its factorization.

243051240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025441 (or 2025437 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 243051240 is about 15590.1007052552. The cubic root of 243051240 is about 624.0690053536.

The spelling of 243051240 in words is "two hundred forty-three million, fifty-one thousand, two hundred forty".