1205505372 has 12 divisors (see below), whose sum is σ = 2812845896. Its totient is φ = 401835120.

The previous prime is 1205505349. The next prime is 1205505373. The reversal of 1205505372 is 2735055021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205505373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50229379 + ... + 50229402.

Almost surely, 2^1205505372 is an apocalyptic number.

1205505372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1205505372 is an abundant number, since it is smaller than the sum of its proper divisors (1607340524).

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

1205505372 is a wasteful number, since it uses less digits than its factorization.

1205505372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100458788 (or 100458786 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 1205505372 is about 34720.3884194863. The cubic root of 1205505372 is about 1064.2811821634.

The spelling of 1205505372 in words is "one billion, two hundred five million, five hundred five thousand, three hundred seventy-two".