30825644 has 12 divisors (see below), whose sum is σ = 54705168. Its totient is φ = 15195600.

The previous prime is 30825631. The next prime is 30825647. The reversal of 30825644 is 44652803.

It is a self number, because there is not a number n which added to its sum of digits gives 30825644.

It is not an unprimeable number, because it can be changed into a prime (30825647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53987 + ... + 54554.

It is an arithmetic number, because the mean of its divisors is an integer number (4558764).

Almost surely, 2^30825644 is an apocalyptic number.

It is an amenable number.

30825644 is a deficient number, since it is larger than the sum of its proper divisors (23879524).

30825644 is a wasteful number, since it uses less digits than its factorization.

30825644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108616 (or 108614 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 30825644 is about 5552.0846535333. The cubic root of 30825644 is about 313.5480129315.

It can be divided in two parts, 308 and 25644, that added together give a palindrome (25952).

The spelling of 30825644 in words is "thirty million, eight hundred twenty-five thousand, six hundred forty-four".