30129452 has 12 divisors (see below), whose sum is σ = 52855320. Its totient is φ = 15027936.

The previous prime is 30129443. The next prime is 30129467. The reversal of 30129452 is 25492103.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7313 + ... + 10664.

It is an arithmetic number, because the mean of its divisors is an integer number (4404610).

Almost surely, 2^30129452 is an apocalyptic number.

It is an amenable number.

30129452 is a deficient number, since it is larger than the sum of its proper divisors (22725868).

30129452 is a wasteful number, since it uses less digits than its factorization.

30129452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18400 (or 18398 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 30129452 is about 5489.0301511287. The cubic root of 30129452 is about 311.1695398008.

The spelling of 30129452 in words is "thirty million, one hundred twenty-nine thousand, four hundred fifty-two".