30505344 has 64 divisors (see below), whose sum is σ = 85814640. Its totient is φ = 9568256.

The previous prime is 30505309. The next prime is 30505399. The reversal of 30505344 is 44350503.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 4192 + ... + 8864.

Almost surely, 2^30505344 is an apocalyptic number.

30505344 is a gapful number since it is divisible by the number (34) 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 30505344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42907320).

30505344 is an abundant number, since it is smaller than the sum of its proper divisors (55309296).

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

30505344 is a wasteful number, since it uses less digits than its factorization.

30505344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707 (or 4695 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 30505344 is about 5523.1643104293. The cubic root of 30505344 is about 312.4582352718.

Adding to 30505344 its reverse (44350503), we get a palindrome (74855847).

The spelling of 30505344 in words is "thirty million, five hundred five thousand, three hundred forty-four".