30349985 has 4 divisors (see below), whose sum is σ = 36419988. Its totient is φ = 24279984.

The previous prime is 30349951. The next prime is 30349993. The reversal of 30349985 is 58994303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15241216 + 15108769 = 3904^2 + 3887^2 .

It is a cyclic number.

It is not a de Polignac number, because 30349985 - 2⁸ = 30349729 is a prime.

It is a super-2 number, since 2×30349985² = 1842243179000450, which contains 22 as substring.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 3034994 + ... + 3035003.

It is an arithmetic number, because the mean of its divisors is an integer number (9104997).

Almost surely, 2^30349985 is an apocalyptic number.

It is an amenable number.

30349985 is a deficient number, since it is larger than the sum of its proper divisors (6070003).

30349985 is an equidigital number, since it uses as much as digits as its factorization.

30349985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6070002.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 30349985 is about 5509.0820469476. The cubic root of 30349985 is about 311.9268984171.

The spelling of 30349985 in words is "thirty million, three hundred forty-nine thousand, nine hundred eighty-five".