30441420 has 240 divisors, whose sum is σ = 107331840. Its totient is φ = 7185024.

The previous prime is 30441419. The next prime is 30441421. The reversal of 30441420 is 2414403.

It is an interprime number because it is at equal distance from previous prime (30441419) and next prime (30441421).

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

It is a junction number, because it is equal to n+sod(n) for n = 30441393 and 30441402.

It is not an unprimeable number, because it can be changed into a prime (30441421) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 707919 + ... + 707961.

It is an arithmetic number, because the mean of its divisors is an integer number (447216).

Almost surely, 2^30441420 is an apocalyptic number.

30441420 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 30441420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53665920).

30441420 is an abundant number, since it is smaller than the sum of its proper divisors (76890420).

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

30441420 is a wasteful number, since it uses less digits than its factorization.

30441420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 30441420 is about 5517.3743755522. The cubic root of 30441420 is about 312.2398303911.

Adding to 30441420 its reverse (2414403), we get a palindrome (32855823).

The spelling of 30441420 in words is "thirty million, four hundred forty-one thousand, four hundred twenty".