30130947 has 40 divisors (see below), whose sum is σ = 56128512. Its totient is φ = 15649200.

The previous prime is 30130939. The next prime is 30130949. The reversal of 30130947 is 74903103.

It is not a de Polignac number, because 30130947 - 2³ = 30130939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 30130947.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30130949) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3822 + ... + 8652.

Almost surely, 2^30130947 is an apocalyptic number.

30130947 is a deficient number, since it is larger than the sum of its proper divisors (25997565).

30130947 is a wasteful number, since it uses less digits than its factorization.

30130947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4861 (or 4852 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 30130947 is about 5489.1663301452. The cubic root of 30130947 is about 311.1746863793.

The spelling of 30130947 in words is "thirty million, one hundred thirty thousand, nine hundred forty-seven".