30121084 has 36 divisors (see below), whose sum is σ = 61679016. Its totient is φ = 12833184.

The previous prime is 30121081. The next prime is 30121087. The reversal of 30121084 is 48012103.

30121084 is nontrivially palindromic in base 13.

It is an interprime number because it is at equal distance from previous prime (30121081) and next prime (30121087).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121081) 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, 44154 + ... + 44830.

It is an arithmetic number, because the mean of its divisors is an integer number (1713306).

Almost surely, 2^30121084 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 30121084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30839508).

30121084 is an abundant number, since it is smaller than the sum of its proper divisors (31557932).

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

30121084 is a wasteful number, since it uses less digits than its factorization.

30121084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 913 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 30121084 is about 5488.2678506064. The cubic root of 30121084 is about 311.1407295876.

Adding to 30121084 its reverse (48012103), we get a palindrome (78133187).

It can be divided in two parts, 3012 and 1084, that added together give a 12-th power (4096 = 2¹²).

The spelling of 30121084 in words is "thirty million, one hundred twenty-one thousand, eighty-four".