30189985 has 8 divisors (see below), whose sum is σ = 41403456. Its totient is φ = 20701680.

The previous prime is 30189983. The next prime is 30190009. The reversal of 30189985 is 58998103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30189985 - 2¹ = 30189983 is a prime.

It is a super-2 number, since 2×30189985² = 1822870388600450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30189983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431251 + ... + 431320.

It is an arithmetic number, because the mean of its divisors is an integer number (5175432).

Almost surely, 2^30189985 is an apocalyptic number.

30189985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30189985 is a deficient number, since it is larger than the sum of its proper divisors (11213471).

30189985 is an equidigital number, since it uses as much as digits as its factorization.

30189985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862583.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 30189985 is about 5494.5413821355. The cubic root of 30189985 is about 311.3777903562.

The spelling of 30189985 in words is "thirty million, one hundred eighty-nine thousand, nine hundred eighty-five".