30707397 has 16 divisors (see below), whose sum is σ = 51991680. Its totient is φ = 17546976.

The previous prime is 30707393. The next prime is 30707419. The reversal of 30707397 is 79370703.

It is not a de Polignac number, because 30707397 - 2² = 30707393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30707393) 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 15 ways as a sum of consecutive naturals, for example, 81048 + ... + 81425.

It is an arithmetic number, because the mean of its divisors is an integer number (3249480).

Almost surely, 2^30707397 is an apocalyptic number.

It is an amenable number.

30707397 is a deficient number, since it is larger than the sum of its proper divisors (21284283).

30707397 is a wasteful number, since it uses less digits than its factorization.

30707397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162489 (or 162483 counting only the distinct ones).

The product of its (nonzero) digits is 27783, while the sum is 36.

The square root of 30707397 is about 5541.4255386137. The cubic root of 30707397 is about 313.1465763755.

The spelling of 30707397 in words is "thirty million, seven hundred seven thousand, three hundred ninety-seven".