243940572 has 30 divisors (see below), whose sum is σ = 637709688. Its totient is φ = 81313416.

The previous prime is 243940537. The next prime is 243940573. The reversal of 243940572 is 275049342.

243940572 is a `hidden beast` number, since 2 + 43 + 9 + 40 + 572 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243940573) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 376128 + ... + 376775.

Almost surely, 2^243940572 is an apocalyptic number.

It is an amenable number.

243940572 is an abundant number, since it is smaller than the sum of its proper divisors (393769116).

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

243940572 is a wasteful number, since it uses less digits than its factorization.

243940572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752919 (or 752908 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 243940572 is about 15618.5969920477. The cubic root of 243940572 is about 624.8292414573.

The spelling of 243940572 in words is "two hundred forty-three million, nine hundred forty thousand, five hundred seventy-two".