180722880 has 224 divisors, whose sum is σ = 687019200. Its totient is φ = 44457984.

The previous prime is 180722831. The next prime is 180722881. The reversal of 180722880 is 88227081.

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 (180722881) 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, 111516 + ... + 113124.

It is an arithmetic number, because the mean of its divisors is an integer number (3067050).

Almost surely, 2^180722880 is an apocalyptic number.

180722880 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 180722880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343509600).

180722880 is an abundant number, since it is smaller than the sum of its proper divisors (506296320).

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

180722880 is a wasteful number, since it uses less digits than its factorization.

180722880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648 (or 1632 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 180722880 is about 13443.3210182603. The cubic root of 180722880 is about 565.3764479005.

The spelling of 180722880 in words is "one hundred eighty million, seven hundred twenty-two thousand, eight hundred eighty".