30928244 has 6 divisors (see below), whose sum is σ = 54124434. Its totient is φ = 15464120.

The previous prime is 30928241. The next prime is 30928259. The reversal of 30928244 is 44282903.

It can be written as a sum of positive squares in only one way, i.e., 25120144 + 5808100 = 5012^2 + 2410^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30928244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30928241) 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 as a sum of consecutive naturals, namely, 3866027 + ... + 3866034.

It is an arithmetic number, because the mean of its divisors is an integer number (9020739).

Almost surely, 2^30928244 is an apocalyptic number.

It is an amenable number.

30928244 is a deficient number, since it is larger than the sum of its proper divisors (23196190).

30928244 is a wasteful number, since it uses less digits than its factorization.

30928244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7732065 (or 7732063 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 30928244 is about 5561.3167505547. The cubic root of 30928244 is about 313.8954985124.

The spelling of 30928244 in words is "thirty million, nine hundred twenty-eight thousand, two hundred forty-four".