30129345 has 48 divisors (see below), whose sum is σ = 55598400. Its totient is φ = 15050880.

The previous prime is 30129343. The next prime is 30129349. The reversal of 30129345 is 54392103.

It is not a de Polignac number, because 30129345 - 2¹ = 30129343 is a prime.

It is a Curzon 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 47 ways as a sum of consecutive naturals, for example, 111871 + ... + 112139.

It is an arithmetic number, because the mean of its divisors is an integer number (1158300).

Almost surely, 2^30129345 is an apocalyptic number.

It is an amenable number.

30129345 is a deficient number, since it is larger than the sum of its proper divisors (25469055).

30129345 is a wasteful number, since it uses less digits than its factorization.

30129345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 30129345 is about 5489.0204044073. The cubic root of 30129345 is about 311.1691714438.

It can be divided in two parts, 301 and 29345, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 30129345 in words is "thirty million, one hundred twenty-nine thousand, three hundred forty-five".