30135620 has 12 divisors (see below), whose sum is σ = 63284844. Its totient is φ = 12054240.

The previous prime is 30135619. The next prime is 30135629. The reversal of 30135620 is 2653103.

30135620 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 18939904 + 11195716 = 4352^2 + 3346^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1506781 = 30135620 / (3 + 0 + 1 + 3 + 5 + 6 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 30135592 and 30135601.

It is not an unprimeable number, because it can be changed into a prime (30135629) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 753371 + ... + 753410.

It is an arithmetic number, because the mean of its divisors is an integer number (5273737).

Almost surely, 2^30135620 is an apocalyptic number.

It is an amenable number.

30135620 is an abundant number, since it is smaller than the sum of its proper divisors (33149224).

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

30135620 is a wasteful number, since it uses less digits than its factorization.

30135620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506790 (or 1506788 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 30135620 is about 5489.5919702652. The cubic root of 30135620 is about 311.1907722122.

Adding to 30135620 its reverse (2653103), we get a palindrome (32788723).

The spelling of 30135620 in words is "thirty million, one hundred thirty-five thousand, six hundred twenty".