30000047 has 16 divisors (see below), whose sum is σ = 37642752. Its totient is φ = 23226720.

The previous prime is 30000041. The next prime is 30000049. The reversal of 30000047 is 74000003.

It is not a de Polignac number, because 30000047 - 2⁸ = 29999791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29999986 and 30000040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11693 + ... + 14025.

It is an arithmetic number, because the mean of its divisors is an integer number (2352672).

Almost surely, 2^30000047 is an apocalyptic number.

30000047 is a deficient number, since it is larger than the sum of its proper divisors (7642705).

30000047 is a wasteful number, since it uses less digits than its factorization.

30000047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518.

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 30000047 is about 5477.2298655433. The cubic root of 30000047 is about 310.7234128619.

The spelling of 30000047 in words is "thirty million, forty-seven", and thus it is an aban number and an uban number.