30752249 has 4 divisors (see below), whose sum is σ = 33547920. Its totient is φ = 27956580.

The previous prime is 30752237. The next prime is 30752273. The reversal of 30752249 is 94225703.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30752249 - 2⁴ = 30752233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30752149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397819 + ... + 1397840.

It is an arithmetic number, because the mean of its divisors is an integer number (8386980).

Almost surely, 2^30752249 is an apocalyptic number.

It is an amenable number.

30752249 is a deficient number, since it is larger than the sum of its proper divisors (2795671).

30752249 is a wasteful number, since it uses less digits than its factorization.

30752249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795670.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 30752249 is about 5545.4710349978. The cubic root of 30752249 is about 313.2989654725.

The spelling of 30752249 in words is "thirty million, seven hundred fifty-two thousand, two hundred forty-nine".