181028680 has 64 divisors (see below), whose sum is σ = 470096640. Its totient is φ = 61454592.

The previous prime is 181028671. The next prime is 181028681. The reversal of 181028680 is 86820181.

It is not an unprimeable number, because it can be changed into a prime (181028681) 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, 25702 + ... + 31978.

It is an arithmetic number, because the mean of its divisors is an integer number (7345260).

Almost surely, 2^181028680 is an apocalyptic number.

181028680 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 181028680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235048320).

181028680 is an abundant number, since it is smaller than the sum of its proper divisors (289067960).

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

181028680 is a wasteful number, since it uses less digits than its factorization.

181028680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6398 (or 6394 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 181028680 is about 13454.6898886596. The cubic root of 181028680 is about 565.6951581320.

The spelling of 181028680 in words is "one hundred eighty-one million, twenty-eight thousand, six hundred eighty".