30870073 has 8 divisors (see below), whose sum is σ = 33489288. Its totient is φ = 28285824.

The previous prime is 30870061. The next prime is 30870109. The reversal of 30870073 is 37007803.

It can be written as a sum of positive squares in 4 ways, for example, as 45369 + 30824704 = 213^2 + 5552^2 .

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 30870073 - 2¹³ = 30861881 is a prime.

It is a super-2 number, since 2×30870073² = 1905922814050658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30870013) 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, 6886 + ... + 10447.

It is an arithmetic number, because the mean of its divisors is an integer number (4186161).

Almost surely, 2^30870073 is an apocalyptic number.

It is an amenable number.

30870073 is a deficient number, since it is larger than the sum of its proper divisors (2619215).

30870073 is a wasteful number, since it uses less digits than its factorization.

30870073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17483.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 30870073 is about 5556.0843226143. The cubic root of 30870073 is about 313.6985795321.

Adding to 30870073 its reverse (37007803), we get a palindrome (67877876).

The spelling of 30870073 in words is "thirty million, eight hundred seventy thousand, seventy-three".