30184040 has 32 divisors (see below), whose sum is σ = 68851080. Its totient is φ = 11907072.

The previous prime is 30184031. The next prime is 30184087. The reversal of 30184040 is 4048103.

It can be written as a sum of positive squares in 4 ways, for example, as 17123044 + 13060996 = 4138^2 + 3614^2 .

It is a super-2 number, since 2×30184040² = 1822152541443200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2249 + ... + 8088.

Almost surely, 2^30184040 is an apocalyptic number.

It is an amenable number.

30184040 is an abundant number, since it is smaller than the sum of its proper divisors (38667040).

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

30184040 is a wasteful number, since it uses less digits than its factorization.

30184040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10421 (or 10417 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 30184040 is about 5494.0003640335. Note that the first 3 decimals coincide. The cubic root of 30184040 is about 311.3573502171.

The spelling of 30184040 in words is "thirty million, one hundred eighty-four thousand, forty".