30688342 has 4 divisors (see below), whose sum is σ = 46032516. Its totient is φ = 15344170.

The previous prime is 30688331. The next prime is 30688367. The reversal of 30688342 is 24388603.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 30688298 and 30688307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7672084 + ... + 7672087.

It is an arithmetic number, because the mean of its divisors is an integer number (11508129).

Almost surely, 2^30688342 is an apocalyptic number.

30688342 is a deficient number, since it is larger than the sum of its proper divisors (15344174).

30688342 is a wasteful number, since it uses less digits than its factorization.

30688342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15344173.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 30688342 is about 5539.7059488749. The cubic root of 30688342 is about 313.0817902190.

The spelling of 30688342 in words is "thirty million, six hundred eighty-eight thousand, three hundred forty-two".