30790147 has 2 divisors, whose sum is σ = 30790148. Its totient is φ = 30790146.

The previous prime is 30790093. The next prime is 30790157. The reversal of 30790147 is 74109703.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30790147 is a prime.

It is not a weakly prime, because it can be changed into another prime (30790157) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15395073 + 15395074.

It is an arithmetic number, because the mean of its divisors is an integer number (15395074).

Almost surely, 2^30790147 is an apocalyptic number.

30790147 is a deficient number, since it is larger than the sum of its proper divisors (1).

30790147 is an equidigital number, since it uses as much as digits as its factorization.

30790147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 30790147 is about 5548.8870055174. The cubic root of 30790147 is about 313.4276122161.

The spelling of 30790147 in words is "thirty million, seven hundred ninety thousand, one hundred forty-seven".