30344420 has 24 divisors (see below), whose sum is σ = 63829248. Its totient is φ = 12117600.

The previous prime is 30344407. The next prime is 30344437. The reversal of 30344420 is 2444303.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30344392 and 30344401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19055 + ... + 20585.

It is an arithmetic number, because the mean of its divisors is an integer number (2659552).

Almost surely, 2^30344420 is an apocalyptic number.

It is an amenable number.

30344420 is an abundant number, since it is smaller than the sum of its proper divisors (33484828).

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

30344420 is a wasteful number, since it uses less digits than its factorization.

30344420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531 (or 2529 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 30344420 is about 5508.5769487228. The cubic root of 30344420 is about 311.9078321881.

Adding to 30344420 its reverse (2444303), we get a palindrome (32788723).

The spelling of 30344420 in words is "thirty million, three hundred forty-four thousand, four hundred twenty".