30709070 has 16 divisors (see below), whose sum is σ = 63173088. Its totient is φ = 10528800.

The previous prime is 30709067. The next prime is 30709093. The reversal of 30709070 is 7090703.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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, 219281 + ... + 219420.

It is an arithmetic number, because the mean of its divisors is an integer number (3948318).

Almost surely, 2^30709070 is an apocalyptic number.

30709070 is an abundant number, since it is smaller than the sum of its proper divisors (32464018).

30709070 is a wasteful number, since it uses less digits than its factorization.

30709070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438715.

The product of its (nonzero) digits is 1323, while the sum is 26.

The square root of 30709070 is about 5541.5764904944. The cubic root of 30709070 is about 313.1522632214.

Adding to 30709070 its reverse (7090703), we get a palindrome (37799773).

The spelling of 30709070 in words is "thirty million, seven hundred nine thousand, seventy".