30121344 has 96 divisors (see below), whose sum is σ = 94596840. Its totient is φ = 9123840.

The previous prime is 30121321. The next prime is 30121349. The reversal of 30121344 is 44312103.

30121344 is a `hidden beast` number, since 301 + 21 + 344 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121349) 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, 11484 + ... + 13860.

Almost surely, 2^30121344 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 30121344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47298420).

30121344 is an abundant number, since it is smaller than the sum of its proper divisors (64475496).

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

30121344 is a wasteful number, since it uses less digits than its factorization.

30121344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408 (or 2393 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 30121344 is about 5488.2915374459. The cubic root of 30121344 is about 311.1416248227.

Adding to 30121344 its reverse (44312103), we get a palindrome (74433447).

It can be divided in two parts, 3012 and 1344, that added together give a square (4356 = 66²).

The spelling of 30121344 in words is "thirty million, one hundred twenty-one thousand, three hundred forty-four".