30113136 has 60 divisors (see below), whose sum is σ = 87193080. Its totient is φ = 9690240.

The previous prime is 30113131. The next prime is 30113179. The reversal of 30113136 is 63131103.

30113136 = T₁₄₈₀ + T₁₄₈₁ + ... + T₁₅₀₆.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30113131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 571 + ... + 7781.

It is an arithmetic number, because the mean of its divisors is an integer number (1453218).

Almost surely, 2^30113136 is an apocalyptic number.

30113136 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 30113136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43596540).

30113136 is an abundant number, since it is smaller than the sum of its proper divisors (57079944).

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

30113136 is a wasteful number, since it uses less digits than its factorization.

30113136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7254 (or 7245 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 30113136 is about 5487.5437128099. The cubic root of 30113136 is about 311.1133604524.

Adding to 30113136 its reverse (63131103), we get a palindrome (93244239).

The spelling of 30113136 in words is "thirty million, one hundred thirteen thousand, one hundred thirty-six".