28330180 has 24 divisors (see below), whose sum is σ = 60946200. Its totient is φ = 11055360.

The previous prime is 28330153. The next prime is 28330193. The reversal of 28330180 is 8103382.

It can be written as a sum of positive squares in 4 ways, for example, as 3069504 + 25260676 = 1752^2 + 5026^2 .

It is a super-3 number, since 3×28330180³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16455 + ... + 18094.

It is an arithmetic number, because the mean of its divisors is an integer number (2539425).

Almost surely, 2^28330180 is an apocalyptic number.

28330180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28330180 is an abundant number, since it is smaller than the sum of its proper divisors (32616020).

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

28330180 is a wasteful number, since it uses less digits than its factorization.

28330180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34599 (or 34597 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 28330180 is about 5322.6102618922. The cubic root of 28330180 is about 304.8478323630.

The spelling of 28330180 in words is "twenty-eight million, three hundred thirty thousand, one hundred eighty".