30706137 has 48 divisors (see below), whose sum is σ = 56309760. Its totient is φ = 15660000.

The previous prime is 30706129. The next prime is 30706139. The reversal of 30706137 is 73160703.

It is not a de Polignac number, because 30706137 - 2³ = 30706129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30706137.

It is not an unprimeable number, because it can be changed into a prime (30706139) 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 47 ways as a sum of consecutive naturals, for example, 40512 + ... + 41262.

It is an arithmetic number, because the mean of its divisors is an integer number (1173120).

Almost surely, 2^30706137 is an apocalyptic number.

It is an amenable number.

30706137 is a deficient number, since it is larger than the sum of its proper divisors (25603623).

30706137 is a wasteful number, since it uses less digits than its factorization.

30706137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 30706137 is about 5541.3118482901. The cubic root of 30706137 is about 313.1422932589.

The spelling of 30706137 in words is "thirty million, seven hundred six thousand, one hundred thirty-seven".