30020184 has 24 divisors (see below), whose sum is σ = 81304860. Its totient is φ = 10006704.

The previous prime is 30020173. The next prime is 30020189. The reversal of 30020184 is 48102003.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×30020184² = 1802422894787712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020189) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 208402 + ... + 208545.

Almost surely, 2^30020184 is an apocalyptic number.

It is an amenable number.

30020184 is an abundant number, since it is smaller than the sum of its proper divisors (51284676).

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

30020184 is a wasteful number, since it uses less digits than its factorization.

30020184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416959 (or 416952 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 30020184 is about 5479.0678039243. The cubic root of 30020184 is about 310.7929198409.

Adding to 30020184 its reverse (48102003), we get a palindrome (78122187).

The spelling of 30020184 in words is "thirty million, twenty thousand, one hundred eighty-four".