30404421 has 12 divisors (see below), whose sum is σ = 44060172. Its totient is φ = 20203776.

The previous prime is 30404377. The next prime is 30404431. The reversal of 30404421 is 12440403.

It can be written as a sum of positive squares in 2 ways, for example, as 1664100 + 28740321 = 1290^2 + 5361^2 .

It is not a de Polignac number, because 30404421 - 2⁶ = 30404357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30404394 and 30404403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30404431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2476 + ... + 8181.

It is an arithmetic number, because the mean of its divisors is an integer number (3671681).

Almost surely, 2^30404421 is an apocalyptic number.

It is an amenable number.

30404421 is a deficient number, since it is larger than the sum of its proper divisors (13655751).

30404421 is a wasteful number, since it uses less digits than its factorization.

30404421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10980 (or 10977 counting only the distinct ones).

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

The square root of 30404421 is about 5514.0204025738. The cubic root of 30404421 is about 312.1132786398.

Adding to 30404421 its reverse (12440403), we get a palindrome (42844824).

The spelling of 30404421 in words is "thirty million, four hundred four thousand, four hundred twenty-one".