30485791 has 6 divisors (see below), whose sum is σ = 35463120. Its totient is φ = 26130636.

The previous prime is 30485783. The next prime is 30485797. The reversal of 30485791 is 19758403.

It is not a de Polignac number, because 30485791 - 2³ = 30485783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30485791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30485797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 311031 + ... + 311128.

It is an arithmetic number, because the mean of its divisors is an integer number (5910520).

Almost surely, 2^30485791 is an apocalyptic number.

30485791 is a deficient number, since it is larger than the sum of its proper divisors (4977329).

30485791 is an equidigital number, since it uses as much as digits as its factorization.

30485791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622173 (or 622166 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 30485791 is about 5521.3939363172. The cubic root of 30485791 is about 312.3914622536.

The spelling of 30485791 in words is "thirty million, four hundred eighty-five thousand, seven hundred ninety-one".