30020644 has 6 divisors (see below), whose sum is σ = 52536134. Its totient is φ = 15010320.

The previous prime is 30020621. The next prime is 30020659. The reversal of 30020644 is 44602003.

It can be written as a sum of positive squares in only one way, i.e., 28836900 + 1183744 = 5370^2 + 1088^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3752577 + ... + 3752584.

Almost surely, 2^30020644 is an apocalyptic number.

It is an amenable number.

30020644 is a deficient number, since it is larger than the sum of its proper divisors (22515490).

30020644 is a wasteful number, since it uses less digits than its factorization.

30020644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7505165 (or 7505163 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 30020644 is about 5479.1097817072. The cubic root of 30020644 is about 310.7945072619.

Adding to 30020644 its reverse (44602003), we get a palindrome (74622647).

The spelling of 30020644 in words is "thirty million, twenty thousand, six hundred forty-four".