30605236 has 12 divisors (see below), whose sum is σ = 56709828. Its totient is φ = 14402432.

The previous prime is 30605233. The next prime is 30605261. The reversal of 30605236 is 63250603.

It can be written as a sum of positive squares in 2 ways, for example, as 23097636 + 7507600 = 4806^2 + 2740^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30605236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30605233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224971 + ... + 225106.

It is an arithmetic number, because the mean of its divisors is an integer number (4725819).

Almost surely, 2^30605236 is an apocalyptic number.

It is an amenable number.

30605236 is a deficient number, since it is larger than the sum of its proper divisors (26104592).

30605236 is a wasteful number, since it uses less digits than its factorization.

30605236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450098 (or 450096 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 30605236 is about 5532.1999240808. The cubic root of 30605236 is about 312.7989195263.

Adding to 30605236 its reverse (63250603), we get a palindrome (93855839).

The spelling of 30605236 in words is "thirty million, six hundred five thousand, two hundred thirty-six".