30134020 has 72 divisors (see below), whose sum is σ = 74606616. Its totient is φ = 10192896.

The previous prime is 30134017. The next prime is 30134029. The reversal of 30134020 is 2043103.

It can be written as a sum of positive squares in 4 ways, for example, as 15876 + 30118144 = 126^2 + 5488^2 .

It is a super-2 number, since 2×30134020² = 1816118322720800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30134029) 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 23 ways as a sum of consecutive naturals, for example, 94902 + ... + 95218.

It is an arithmetic number, because the mean of its divisors is an integer number (1036203).

Almost surely, 2^30134020 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 30134020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37303308).

30134020 is an abundant number, since it is smaller than the sum of its proper divisors (44472596).

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

30134020 is a wasteful number, since it uses less digits than its factorization.

30134020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30134020 is about 5489.4462380098. The cubic root of 30134020 is about 311.1852647314.

Adding to 30134020 its reverse (2043103), we get a palindrome (32177123).

The spelling of 30134020 in words is "thirty million, one hundred thirty-four thousand, twenty".