30984747 has 8 divisors (see below), whose sum is σ = 41587200. Its totient is φ = 20519400.

The previous prime is 30984743. The next prime is 30984757. The reversal of 30984747 is 74748903.

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

It is not a de Polignac number, because 30984747 - 2² = 30984743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30984699 and 30984708.

It is not an unprimeable number, because it can be changed into a prime (30984743) 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, 33747 + ... + 34652.

It is an arithmetic number, because the mean of its divisors is an integer number (5198400).

Almost surely, 2^30984747 is an apocalyptic number.

30984747 is a deficient number, since it is larger than the sum of its proper divisors (10602453).

30984747 is a wasteful number, since it uses less digits than its factorization.

30984747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68553.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 30984747 is about 5566.3944344611. The cubic root of 30984747 is about 314.0865347661.

The spelling of 30984747 in words is "thirty million, nine hundred eighty-four thousand, seven hundred forty-seven".