30140644 has 12 divisors (see below), whose sum is σ = 54171964. Its totient is φ = 14662944.

The previous prime is 30140639. The next prime is 30140731. The reversal of 30140644 is 44604103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27457600 + 2683044 = 5240^2 + 1638^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101679 + ... + 101974.

Almost surely, 2^30140644 is an apocalyptic number.

It is an amenable number.

30140644 is a deficient number, since it is larger than the sum of its proper divisors (24031320).

30140644 is a wasteful number, since it uses less digits than its factorization.

30140644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203694 (or 203692 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 30140644 is about 5490.0495444030. The cubic root of 30140644 is about 311.2080644351.

Adding to 30140644 its reverse (44604103), we get a palindrome (74744747).

The spelling of 30140644 in words is "thirty million, one hundred forty thousand, six hundred forty-four".