180561232 has 20 divisors (see below), whose sum is σ = 353446996. Its totient is φ = 89349120.

The previous prime is 180561217. The next prime is 180561287. The reversal of 180561232 is 232165081.

It can be written as a sum of positive squares in 2 ways, for example, as 108243216 + 72318016 = 10404^2 + 8504^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 180561232.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56619 + ... + 59722.

Almost surely, 2^180561232 is an apocalyptic number.

It is an amenable number.

180561232 is a deficient number, since it is larger than the sum of its proper divisors (172885764).

180561232 is a wasteful number, since it uses less digits than its factorization.

180561232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116446 (or 116440 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 180561232 is about 13437.3074683882. The cubic root of 180561232 is about 565.2078301911.

The spelling of 180561232 in words is "one hundred eighty million, five hundred sixty-one thousand, two hundred thirty-two".