30320424 has 48 divisors (see below), whose sum is σ = 82410900. Its totient is φ = 10070784.

The previous prime is 30320393. The next prime is 30320453. The reversal of 30320424 is 42402303.

It can be written as a sum of positive squares in 2 ways, for example, as 28836900 + 1483524 = 5370^2 + 1218^2 .

It is a super-2 number, since 2×30320424² = 1838656223079552, which contains 22 as substring.

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 = 30320397 and 30320406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26292 + ... + 27420.

Almost surely, 2^30320424 is an apocalyptic number.

It is an amenable number.

30320424 is an abundant number, since it is smaller than the sum of its proper divisors (52090476).

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

30320424 is a wasteful number, since it uses less digits than its factorization.

30320424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514 (or 1507 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 30320424 is about 5506.3984599736. The cubic root of 30320424 is about 311.8255928604.

Adding to 30320424 its reverse (42402303), we get a palindrome (72722727).

The spelling of 30320424 in words is "thirty million, three hundred twenty thousand, four hundred twenty-four".