180745560 has 128 divisors (see below), whose sum is σ = 608817600. Its totient is φ = 47692800.

The previous prime is 180745559. The next prime is 180745567. The reversal of 180745560 is 65547081.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180745567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108252 + ... + 109908.

Almost surely, 2^180745560 is an apocalyptic number.

180745560 is a gapful number since it is divisible by the number (10) 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 180745560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304408800).

180745560 is an abundant number, since it is smaller than the sum of its proper divisors (428072040).

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

180745560 is a wasteful number, since it uses less digits than its factorization.

180745560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778 (or 1768 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 180745560 is about 13444.1645333580. The cubic root of 180745560 is about 565.4000977403.

The spelling of 180745560 in words is "one hundred eighty million, seven hundred forty-five thousand, five hundred sixty".