30132749 has 2 divisors, whose sum is σ = 30132750. Its totient is φ = 30132748.

The previous prime is 30132743. The next prime is 30132757. The reversal of 30132749 is 94723103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30085225 + 47524 = 5485^2 + 218^2 .

It is an emirp because it is prime and its reverse (94723103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30132749 - 2⁸ = 30132493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30132743) 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, 15066374 + 15066375.

It is an arithmetic number, because the mean of its divisors is an integer number (15066375).

Almost surely, 2^30132749 is an apocalyptic number.

It is an amenable number.

30132749 is a deficient number, since it is larger than the sum of its proper divisors (1).

30132749 is an equidigital number, since it uses as much as digits as its factorization.

30132749 is an odious number, because the sum of its binary digits is odd.

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

The square root of 30132749 is about 5489.3304691920. The cubic root of 30132749 is about 311.1808895874.

The spelling of 30132749 in words is "thirty million, one hundred thirty-two thousand, seven hundred forty-nine".