30520344 has 32 divisors (see below), whose sum is σ = 77379840. Its totient is φ = 10029600.

The previous prime is 30520339. The next prime is 30520367. The reversal of 30520344 is 44302503.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30520344.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7252 + ... + 10659.

It is an arithmetic number, because the mean of its divisors is an integer number (2418120).

Almost surely, 2^30520344 is an apocalyptic number.

It is an amenable number.

30520344 is an abundant number, since it is smaller than the sum of its proper divisors (46859496).

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

30520344 is a wasteful number, since it uses less digits than its factorization.

30520344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17991 (or 17987 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 30520344 is about 5524.5220607759. The cubic root of 30520344 is about 312.5094405681.

Adding to 30520344 its reverse (44302503), we get a palindrome (74822847).

The spelling of 30520344 in words is "thirty million, five hundred twenty thousand, three hundred forty-four".