243626784240 has 160 divisors (see below), whose sum is σ = 900662639616. Its totient is φ = 53264977920.

The previous prime is 243626784227. The next prime is 243626784367. The reversal of 243626784240 is 42487626342.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 243626784240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3113881 + ... + 3191160.

Almost surely, 2^243626784240 is an apocalyptic number.

243626784240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243626784240 is an abundant number, since it is smaller than the sum of its proper divisors (657035855376).

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

243626784240 is a wasteful number, since it uses less digits than its factorization.

243626784240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305087 (or 6305081 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 48.

The spelling of 243626784240 in words is "two hundred forty-three billion, six hundred twenty-six million, seven hundred eighty-four thousand, two hundred forty".