30534120 has 96 divisors (see below), whose sum is σ = 100456200. Its totient is φ = 8042496.

The previous prime is 30534109. The next prime is 30534137. The reversal of 30534120 is 2143503.

30534120 is a `hidden beast` number, since 305 + 341 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18714276 + 11819844 = 4326^2 + 3438^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 30534093 and 30534102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31564 + ... + 32516.

Almost surely, 2^30534120 is an apocalyptic number.

30534120 is a gapful number since it is divisible by the number (30) 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 30534120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50228100).

30534120 is an abundant number, since it is smaller than the sum of its proper divisors (69922080).

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

30534120 is a wasteful number, since it uses less digits than its factorization.

30534120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30534120 is about 5525.7687248020. The cubic root of 30534120 is about 312.5564527346.

Adding to 30534120 its reverse (2143503), we get a palindrome (32677623).

The spelling of 30534120 in words is "thirty million, five hundred thirty-four thousand, one hundred twenty".