30085073 has 4 divisors (see below), whose sum is σ = 30269808. Its totient is φ = 29900340.

The previous prime is 30085051. The next prime is 30085129. The reversal of 30085073 is 37058003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37058003 = 1367 ⋅27109.

It is a cyclic number.

It is not a de Polignac number, because 30085073 - 2⁶ = 30085009 is a prime.

It is a super-2 number, since 2×30085073² = 1810223234830658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30084073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92123 + ... + 92448.

It is an arithmetic number, because the mean of its divisors is an integer number (7567452).

Almost surely, 2^30085073 is an apocalyptic number.

It is an amenable number.

30085073 is a deficient number, since it is larger than the sum of its proper divisors (184735).

30085073 is a wasteful number, since it uses less digits than its factorization.

30085073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184734.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 30085073 is about 5484.9861440117. The cubic root of 30085073 is about 311.0166862771.

The spelling of 30085073 in words is "thirty million, eighty-five thousand, seventy-three".