180296038728 has 128 divisors (see below), whose sum is σ = 540009388800. Its totient is φ = 55407587328.

The previous prime is 180296038723. The next prime is 180296038739. The reversal of 180296038728 is 827830692081.

It is a happy number.

180296038728 is a `hidden beast` number, since 1 + 8 + 0 + 2 + 9 + 603 + 8 + 7 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (180296038723) 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, 2271976 + ... + 2349992.

It is an arithmetic number, because the mean of its divisors is an integer number (4218823350).

Almost surely, 2^180296038728 is an apocalyptic number.

180296038728 is a gapful number since it is divisible by the number (18) 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 180296038728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270004694400).

180296038728 is an abundant number, since it is smaller than the sum of its proper divisors (359713350072).

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

180296038728 is a wasteful number, since it uses less digits than its factorization.

180296038728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78868 (or 78858 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 180296038728 in words is "one hundred eighty billion, two hundred ninety-six million, thirty-eight thousand, seven hundred twenty-eight".