30836140 has 24 divisors (see below), whose sum is σ = 65388960. Its totient is φ = 12213888.

The previous prime is 30836137. The next prime is 30836153. The reversal of 30836140 is 4163803.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 5425 + ... + 9544.

It is an arithmetic number, because the mean of its divisors is an integer number (2724540).

Almost surely, 2^30836140 is an apocalyptic number.

It is an amenable number.

30836140 is an abundant number, since it is smaller than the sum of its proper divisors (34552820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30836140 is a wasteful number, since it uses less digits than its factorization.

30836140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15081 (or 15079 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 30836140 is about 5553.0298036297. The cubic root of 30836140 is about 313.5835961458.

Adding to 30836140 its reverse (4163803), we get a palindrome (34999943).

It can be divided in two parts, 30836 and 140, that added together give a square (30976 = 176²).

The spelling of 30836140 in words is "thirty million, eight hundred thirty-six thousand, one hundred forty".