330121428 has 144 divisors (see below), whose sum is σ = 1016205120. Its totient is φ = 82446336.

The previous prime is 330121427. The next prime is 330121439. The reversal of 330121428 is 824121033.

It is a junction number, because it is equal to n+sod(n) for n = 330121398 and 330121407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330121423) 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 47 ways as a sum of consecutive naturals, for example, 144100 + ... + 146372.

It is an arithmetic number, because the mean of its divisors is an integer number (7056980).

Almost surely, 2^330121428 is an apocalyptic number.

330121428 is a gapful number since it is divisible by the number (38) 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 330121428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508102560).

330121428 is an abundant number, since it is smaller than the sum of its proper divisors (686083692).

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

330121428 is a wasteful number, since it uses less digits than its factorization.

330121428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326 (or 2317 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 330121428 is about 18169.2440128917. The cubic root of 330121428 is about 691.1270720891.

The spelling of 330121428 in words is "three hundred thirty million, one hundred twenty-one thousand, four hundred twenty-eight".