30707139 has 8 divisors (see below), whose sum is σ = 42723072. Its totient is φ = 19581320.

The previous prime is 30707137. The next prime is 30707141. The reversal of 30707139 is 93170703.

It is an interprime number because it is at equal distance from previous prime (30707137) and next prime (30707141).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30707139 - 2¹ = 30707137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30707137) 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, 222447 + ... + 222584.

It is an arithmetic number, because the mean of its divisors is an integer number (5340384).

Almost surely, 2^30707139 is an apocalyptic number.

30707139 is a deficient number, since it is larger than the sum of its proper divisors (12015933).

30707139 is a wasteful number, since it uses less digits than its factorization.

30707139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445057.

The product of its (nonzero) digits is 3969, while the sum is 30.

The square root of 30707139 is about 5541.4022593564. The cubic root of 30707139 is about 313.1456993659.

The spelling of 30707139 in words is "thirty million, seven hundred seven thousand, one hundred thirty-nine".