30942070 has 16 divisors (see below), whose sum is σ = 58627440. Its totient is φ = 11725344.

The previous prime is 30942059. The next prime is 30942073. The reversal of 30942070 is 7024903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30942073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81237 + ... + 81616.

It is an arithmetic number, because the mean of its divisors is an integer number (3664215).

Almost surely, 2^30942070 is an apocalyptic number.

30942070 is a deficient number, since it is larger than the sum of its proper divisors (27685370).

30942070 is a wasteful number, since it uses less digits than its factorization.

30942070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162879.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 30942070 is about 5562.5596626014. The cubic root of 30942070 is about 313.9422656100.

Adding to 30942070 its reverse (7024903), we get a palindrome (37966973).

The spelling of 30942070 in words is "thirty million, nine hundred forty-two thousand, seventy".