30404216 has 16 divisors (see below), whose sum is σ = 57078000. Its totient is φ = 15183424.

The previous prime is 30404203. The next prime is 30404239. The reversal of 30404216 is 61240403.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6581 + ... + 10203.

It is an arithmetic number, because the mean of its divisors is an integer number (3567375).

Almost surely, 2^30404216 is an apocalyptic number.

It is an amenable number.

30404216 is a deficient number, since it is larger than the sum of its proper divisors (26673784).

30404216 is a wasteful number, since it uses less digits than its factorization.

30404216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678 (or 4674 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 30404216 is about 5514.0018135652. The cubic root of 30404216 is about 312.1125771699.

Subtracting from 30404216 its sum of digits (20), we obtain a square (30404196 = 5514²).

Adding to 30404216 its reverse (61240403), we get a palindrome (91644619).

The spelling of 30404216 in words is "thirty million, four hundred four thousand, two hundred sixteen".