30356136 has 72 divisors (see below), whose sum is σ = 86052330. Its totient is φ = 9666624.

The previous prime is 30356111. The next prime is 30356141. The reversal of 30356136 is 63165303.

It can be written as a sum of positive squares in only one way, i.e., 26071236 + 4284900 = 5106^2 + 2070^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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 17 ways as a sum of consecutive naturals, for example, 37690 + ... + 38486.

Almost surely, 2^30356136 is an apocalyptic number.

30356136 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30356136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43026165).

30356136 is an abundant number, since it is smaller than the sum of its proper divisors (55696194).

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

30356136 is a wasteful number, since it uses less digits than its factorization.

30356136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 30356136 is about 5509.6402786389. The cubic root of 30356136 is about 311.9479696274.

The spelling of 30356136 in words is "thirty million, three hundred fifty-six thousand, one hundred thirty-six".