30681716 has 12 divisors (see below), whose sum is σ = 57823332. Its totient is φ = 14160768.

The previous prime is 30681709. The next prime is 30681757. The reversal of 30681716 is 61718603.

It can be written as a sum of positive squares in 2 ways, for example, as 11356900 + 19324816 = 3370^2 + 4396^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294965 + ... + 295068.

It is an arithmetic number, because the mean of its divisors is an integer number (4818611).

Almost surely, 2^30681716 is an apocalyptic number.

It is an amenable number.

30681716 is a deficient number, since it is larger than the sum of its proper divisors (27141616).

30681716 is a wasteful number, since it uses less digits than its factorization.

30681716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590050 (or 590048 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 30681716 is about 5539.1078704066. The cubic root of 30681716 is about 313.0592558283.

The spelling of 30681716 in words is "thirty million, six hundred eighty-one thousand, seven hundred sixteen".