30444420 has 48 divisors (see below), whose sum is σ = 86139648. Its totient is φ = 8033280.

The previous prime is 30444397. The next prime is 30444437. The reversal of 30444420 is 2444403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3205 + ... + 8435.

It is an arithmetic number, because the mean of its divisors is an integer number (1794576).

Almost surely, 2^30444420 is an apocalyptic number.

30444420 is a gapful number since it is divisible by the number (30) 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 30444420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43069824).

30444420 is an abundant number, since it is smaller than the sum of its proper divisors (55695228).

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

30444420 is a wasteful number, since it uses less digits than its factorization.

30444420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5340 (or 5338 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 30444420 is about 5517.6462373008. The cubic root of 30444420 is about 312.2500871260.

Adding to 30444420 its reverse (2444403), we get a palindrome (32888823).

The spelling of 30444420 in words is "thirty million, four hundred forty-four thousand, four hundred twenty".