30168936 has 112 divisors (see below), whose sum is σ = 97058400. Its totient is φ = 8608032.

The previous prime is 30168913. The next prime is 30168947. The reversal of 30168936 is 63986103.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 30168936.

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 27 ways as a sum of consecutive naturals, for example, 40455 + ... + 41193.

Almost surely, 2^30168936 is an apocalyptic number.

30168936 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 30168936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48529200).

30168936 is an abundant number, since it is smaller than the sum of its proper divisors (66889464).

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

30168936 is an equidigital number, since it uses as much as digits as its factorization.

30168936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 30168936 is about 5492.6256016590. The cubic root of 30168936 is about 311.3054074680.

The spelling of 30168936 in words is "thirty million, one hundred sixty-eight thousand, nine hundred thirty-six".