30105147 has 16 divisors (see below), whose sum is σ = 43202592. Its totient is φ = 18577920.

The previous prime is 30105109. The next prime is 30105151. The reversal of 30105147 is 74150103.

It is not a de Polignac number, because 30105147 - 2¹² = 30101051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30105167) 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, 1728 + ... + 7949.

It is an arithmetic number, because the mean of its divisors is an integer number (2700162).

Almost surely, 2^30105147 is an apocalyptic number.

30105147 is a deficient number, since it is larger than the sum of its proper divisors (13097445).

30105147 is a wasteful number, since it uses less digits than its factorization.

30105147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9758.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 30105147 is about 5486.8157432157. The cubic root of 30105147 is about 311.0858452791.

The spelling of 30105147 in words is "thirty million, one hundred five thousand, one hundred forty-seven".