180530656 has 24 divisors (see below), whose sum is σ = 357273504. Its totient is φ = 89794560.

The previous prime is 180530653. The next prime is 180530671. The reversal of 180530656 is 656035081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180530653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8440 + ... + 20791.

It is an arithmetic number, because the mean of its divisors is an integer number (14886396).

Almost surely, 2^180530656 is an apocalyptic number.

180530656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

180530656 is a deficient number, since it is larger than the sum of its proper divisors (176742848).

180530656 is a wasteful number, since it uses less digits than its factorization.

180530656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29434 (or 29426 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 180530656 is about 13436.1696922895. The cubic root of 180530656 is about 565.1759245415.

The spelling of 180530656 in words is "one hundred eighty million, five hundred thirty thousand, six hundred fifty-six".