30129347 has 8 divisors (see below), whose sum is σ = 31609440. Its totient is φ = 28678720.

The previous prime is 30129343. The next prime is 30129349. The reversal of 30129347 is 74392103.

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

It is a cyclic number.

It is not a de Polignac number, because 30129347 - 2² = 30129343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30129343) 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, 5258 + ... + 9375.

It is an arithmetic number, because the mean of its divisors is an integer number (3951180).

Almost surely, 2^30129347 is an apocalyptic number.

30129347 is a deficient number, since it is larger than the sum of its proper divisors (1480093).

30129347 is a wasteful number, since it uses less digits than its factorization.

30129347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14733.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 30129347 is about 5489.0205865892. The cubic root of 30129347 is about 311.1691783290.

The spelling of 30129347 in words is "thirty million, one hundred twenty-nine thousand, three hundred forty-seven".