30340420 has 24 divisors (see below), whose sum is σ = 69507648. Its totient is φ = 11032800.

The previous prime is 30340417. The next prime is 30340441. The reversal of 30340420 is 2404303.

It is a junction number, because it is equal to n+sod(n) for n = 30340394 and 30340403.

It is a congruent number.

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, 68736 + ... + 69175.

It is an arithmetic number, because the mean of its divisors is an integer number (2896152).

Almost surely, 2^30340420 is an apocalyptic number.

It is an amenable number.

30340420 is an abundant number, since it is smaller than the sum of its proper divisors (39167228).

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

30340420 is a wasteful number, since it uses less digits than its factorization.

30340420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137931 (or 137929 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 30340420 is about 5508.2138665814. The cubic root of 30340420 is about 311.8941263606.

Adding to 30340420 its reverse (2404303), we get a palindrome (32744723).

The spelling of 30340420 in words is "thirty million, three hundred forty thousand, four hundred twenty".