30539136 has 64 divisors (see below), whose sum is σ = 82399680. Its totient is φ = 10019328.

The previous prime is 30539111. The next prime is 30539141. The reversal of 30539136 is 63193503.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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, 25135 + ... + 26321.

It is an arithmetic number, because the mean of its divisors is an integer number (1287495).

Almost surely, 2^30539136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30539136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41199840).

30539136 is an abundant number, since it is smaller than the sum of its proper divisors (51860544).

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

30539136 is a wasteful number, since it uses less digits than its factorization.

30539136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271 (or 1259 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 30.

The square root of 30539136 is about 5526.2225796651. Note that the first 3 decimals coincide. The cubic root of 30539136 is about 312.5735668933.

The spelling of 30539136 in words is "thirty million, five hundred thirty-nine thousand, one hundred thirty-six".