30989247 has 8 divisors (see below), whose sum is σ = 43493760. Its totient is φ = 19572120.

The previous prime is 30989237. The next prime is 30989261. The reversal of 30989247 is 74298903.

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

It is not a de Polignac number, because 30989247 - 2⁶ = 30989183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30989199 and 30989208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30989207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271779 + ... + 271892.

It is an arithmetic number, because the mean of its divisors is an integer number (5436720).

Almost surely, 2^30989247 is an apocalyptic number.

30989247 is a deficient number, since it is larger than the sum of its proper divisors (12504513).

30989247 is a wasteful number, since it uses less digits than its factorization.

30989247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543693.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 30989247 is about 5566.7986311703. The cubic root of 30989247 is about 314.1017392471.

The spelling of 30989247 in words is "thirty million, nine hundred eighty-nine thousand, two hundred forty-seven".