30859136 has 128 divisors (see below), whose sum is σ = 79902720. Its totient is φ = 11520000.

The previous prime is 30859111. The next prime is 30859141. The reversal of 30859136 is 63195803.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 30859096 and 30859105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305486 + ... + 305586.

It is an arithmetic number, because the mean of its divisors is an integer number (624240).

Almost surely, 2^30859136 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 30859136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39951360).

30859136 is an abundant number, since it is smaller than the sum of its proper divisors (49043584).

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

30859136 is a wasteful number, since it uses less digits than its factorization.

30859136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 30859136 is about 5555.0999990999. The cubic root of 30859136 is about 313.6615282578.

It can be divided in two parts, 3085 and 9136, that added together give a palindrome (12221).

The spelling of 30859136 in words is "thirty million, eight hundred fifty-nine thousand, one hundred thirty-six".