30140636 has 12 divisors (see below), whose sum is σ = 53489520. Its totient is φ = 14857920.

The previous prime is 30140629. The next prime is 30140639. The reversal of 30140636 is 63604103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30140639) 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, 52781 + ... + 53348.

It is an arithmetic number, because the mean of its divisors is an integer number (4457460).

Almost surely, 2^30140636 is an apocalyptic number.

It is an amenable number.

30140636 is a deficient number, since it is larger than the sum of its proper divisors (23348884).

30140636 is a wasteful number, since it uses less digits than its factorization.

30140636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106204 (or 106202 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 30140636 is about 5490.0488158121. The cubic root of 30140636 is about 311.2080369012.

Adding to 30140636 its reverse (63604103), we get a palindrome (93744739).

The spelling of 30140636 in words is "thirty million, one hundred forty thousand, six hundred thirty-six".