180616080 has 80 divisors (see below), whose sum is σ = 562178304. Its totient is φ = 47969280.

The previous prime is 180616067. The next prime is 180616081. The reversal of 180616080 is 80616081.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (180616081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63652 + ... + 66428.

Almost surely, 2^180616080 is an apocalyptic number.

180616080 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 180616080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281089152).

180616080 is an abundant number, since it is smaller than the sum of its proper divisors (381562224).

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

180616080 is a wasteful number, since it uses less digits than its factorization.

180616080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064 (or 3058 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 180616080 is about 13439.3481984805. The cubic root of 180616080 is about 565.2650543255.

Subtracting from 180616080 its reverse (80616081), we obtain a palindrome (99999999).

The spelling of 180616080 in words is "one hundred eighty million, six hundred sixteen thousand, eighty".