30128180 has 24 divisors (see below), whose sum is σ = 63504672. Its totient is φ = 12006432.

The previous prime is 30128179. The next prime is 30128201. The reversal of 30128180 is 8182103.

It is a super-2 number, since 2×30128180² = 1815414460224800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2999 + ... + 8321.

It is an arithmetic number, because the mean of its divisors is an integer number (2646028).

Almost surely, 2^30128180 is an apocalyptic number.

It is an amenable number.

30128180 is an abundant number, since it is smaller than the sum of its proper divisors (33376492).

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

30128180 is a wasteful number, since it uses less digits than its factorization.

30128180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5615 (or 5613 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 30128180 is about 5488.9142824424. The cubic root of 30128180 is about 311.1651607719.

Adding to 30128180 its sum of digits (23), we get a triangular number (30128203 = T₇₇₆₂).

The spelling of 30128180 in words is "thirty million, one hundred twenty-eight thousand, one hundred eighty".