30113020 has 48 divisors (see below), whose sum is σ = 74773440. Its totient is φ = 9967104.

The previous prime is 30113009. The next prime is 30113023. The reversal of 30113020 is 2031103.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 30112988 and 30113006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30113023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352 + ... + 7768.

It is an arithmetic number, because the mean of its divisors is an integer number (1557780).

Almost surely, 2^30113020 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 30113020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37386720).

30113020 is an abundant number, since it is smaller than the sum of its proper divisors (44660420).

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

30113020 is a wasteful number, since it uses less digits than its factorization.

30113020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7462 (or 7460 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 30113020 is about 5487.5331434079. The cubic root of 30113020 is about 311.1129609678.

Adding to 30113020 its reverse (2031103), we get a palindrome (32144123).

It can be divided in two parts, 30 and 113020, that added together give a triangular number (113050 = T₄₇₅).

The spelling of 30113020 in words is "thirty million, one hundred thirteen thousand, twenty".