30873730 has 8 divisors (see below), whose sum is σ = 55572732. Its totient is φ = 12349488.

The previous prime is 30873721. The next prime is 30873749. The reversal of 30873730 is 3737803.

It can be written as a sum of positive squares in 2 ways, for example, as 27973521 + 2900209 = 5289^2 + 1703^2 .

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

It is a super-3 number, since 3×30873730³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 30873692 and 30873701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1543677 + ... + 1543696.

Almost surely, 2^30873730 is an apocalyptic number.

30873730 is a deficient number, since it is larger than the sum of its proper divisors (24699002).

30873730 is a wasteful number, since it uses less digits than its factorization.

30873730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087380.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 30873730 is about 5556.4134115453. The cubic root of 30873730 is about 313.7109663985.

The spelling of 30873730 in words is "thirty million, eight hundred seventy-three thousand, seven hundred thirty".