30872147 has 2 divisors, whose sum is σ = 30872148. Its totient is φ = 30872146.

The previous prime is 30872123. The next prime is 30872197. The reversal of 30872147 is 74127803.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30872147 is a prime.

It is not a weakly prime, because it can be changed into another prime (30872197) 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 as a sum of consecutive naturals, namely, 15436073 + 15436074.

It is an arithmetic number, because the mean of its divisors is an integer number (15436074).

Almost surely, 2^30872147 is an apocalyptic number.

30872147 is a deficient number, since it is larger than the sum of its proper divisors (1).

30872147 is an equidigital number, since it uses as much as digits as its factorization.

30872147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 30872147 is about 5556.2709617152. The cubic root of 30872147 is about 313.7056046346.

The spelling of 30872147 in words is "thirty million, eight hundred seventy-two thousand, one hundred forty-seven".