30683405 has 4 divisors (see below), whose sum is σ = 36820092. Its totient is φ = 24546720.

The previous prime is 30683383. The next prime is 30683407. The reversal of 30683405 is 50438603.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21325924 + 9357481 = 4618^2 + 3059^2 .

It is not a de Polignac number, because 30683405 - 2²² = 26489101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30683407) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3068336 + ... + 3068345.

It is an arithmetic number, because the mean of its divisors is an integer number (9205023).

Almost surely, 2^30683405 is an apocalyptic number.

It is an amenable number.

30683405 is a deficient number, since it is larger than the sum of its proper divisors (6136687).

30683405 is an equidigital number, since it uses as much as digits as its factorization.

30683405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6136686.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 30683405 is about 5539.2603296830. The cubic root of 30683405 is about 313.0650002634.

The spelling of 30683405 in words is "thirty million, six hundred eighty-three thousand, four hundred five".