30628244 has 6 divisors (see below), whose sum is σ = 53599434. Its totient is φ = 15314120.

The previous prime is 30628243. The next prime is 30628259. The reversal of 30628244 is 44282603.

It can be written as a sum of positive squares in only one way, i.e., 22448644 + 8179600 = 4738^2 + 2860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30628243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3828527 + ... + 3828534.

It is an arithmetic number, because the mean of its divisors is an integer number (8933239).

Almost surely, 2^30628244 is an apocalyptic number.

It is an amenable number.

30628244 is a deficient number, since it is larger than the sum of its proper divisors (22971190).

30628244 is a wasteful number, since it uses less digits than its factorization.

30628244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7657065 (or 7657063 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 30628244 is about 5534.2789954971. The cubic root of 30628244 is about 312.8772838388.

The spelling of 30628244 in words is "thirty million, six hundred twenty-eight thousand, two hundred forty-four".