1205543872 has 112 divisors (see below), whose sum is σ = 2723725312. Its totient is φ = 525450240.

The previous prime is 1205543837. The next prime is 1205543881. The reversal of 1205543872 is 2783455021.

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, 1108513 + ... + 1109599.

It is an arithmetic number, because the mean of its divisors is an integer number (24318976).

Almost surely, 2^1205543872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1205543872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1361862656).

1205543872 is an abundant number, since it is smaller than the sum of its proper divisors (1518181440).

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

1205543872 is a wasteful number, since it uses less digits than its factorization.

1205543872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 1205543872 is about 34720.9428443411. The cubic root of 1205543872 is about 1064.2925119593.

Adding to 1205543872 its reverse (2783455021), we get a palindrome (3988998893).

The spelling of 1205543872 in words is "one billion, two hundred five million, five hundred forty-three thousand, eight hundred seventy-two".