243112560 has 80 divisors (see below), whose sum is σ = 760772736. Its totient is φ = 64217344.

The previous prime is 243112559. The next prime is 243112579. The reversal of 243112560 is 65211342.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 243112560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20947 + ... + 30413.

Almost surely, 2^243112560 is an apocalyptic number.

243112560 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 243112560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380386368).

243112560 is an abundant number, since it is smaller than the sum of its proper divisors (517660176).

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

243112560 is a wasteful number, since it uses less digits than its factorization.

243112560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9590 (or 9584 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 243112560 is about 15592.0672138110. The cubic root of 243112560 is about 624.1214835795.

The spelling of 243112560 in words is "two hundred forty-three million, one hundred twelve thousand, five hundred sixty".