30018973 has 8 divisors (see below), whose sum is σ = 31449600. Its totient is φ = 28614768.

The previous prime is 30018971. The next prime is 30018977. The reversal of 30018973 is 37981003.

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

It is a cyclic number.

It is not a de Polignac number, because 30018973 - 2¹ = 30018971 is a prime.

It is a super-2 number, since 2×30018973² = 1802277479949458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30018971) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4261 + ... + 8842.

It is an arithmetic number, because the mean of its divisors is an integer number (3931200).

Almost surely, 2^30018973 is an apocalyptic number.

It is an amenable number.

30018973 is a deficient number, since it is larger than the sum of its proper divisors (1430627).

30018973 is a wasteful number, since it uses less digits than its factorization.

30018973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13211.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 30018973 is about 5478.9572913101. The cubic root of 30018973 is about 310.7887407050.

Adding to 30018973 its reverse (37981003), we get a palindrome (67999976).

The spelling of 30018973 in words is "thirty million, eighteen thousand, nine hundred seventy-three".