30105249 has 16 divisors (see below), whose sum is σ = 42612480. Its totient is φ = 18840320.

The previous prime is 30105209. The next prime is 30105307. The reversal of 30105249 is 94250103.

It is a cyclic number.

It is not a de Polignac number, because 30105249 - 2¹⁹ = 29580961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30105209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36259 + ... + 37079.

It is an arithmetic number, because the mean of its divisors is an integer number (2663280).

Almost surely, 2^30105249 is an apocalyptic number.

It is an amenable number.

30105249 is a deficient number, since it is larger than the sum of its proper divisors (12507231).

30105249 is a wasteful number, since it uses less digits than its factorization.

30105249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 30105249 is about 5486.8250382165. The cubic root of 30105249 is about 311.0861966112.

The spelling of 30105249 in words is "thirty million, one hundred five thousand, two hundred forty-nine".