30730216 has 16 divisors (see below), whose sum is σ = 62857440. Its totient is φ = 13968240.

The previous prime is 30730213. The next prime is 30730223. The reversal of 30730216 is 61203703.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (30730211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174516 + ... + 174691.

It is an arithmetic number, because the mean of its divisors is an integer number (3928590).

Almost surely, 2^30730216 is an apocalyptic number.

It is an amenable number.

30730216 is an abundant number, since it is smaller than the sum of its proper divisors (32127224).

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

30730216 is a wasteful number, since it uses less digits than its factorization.

30730216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349224 (or 349220 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 30730216 is about 5543.4841029807. The cubic root of 30730216 is about 313.2241247095.

Adding to 30730216 its reverse (61203703), we get a palindrome (91933919).

The spelling of 30730216 in words is "thirty million, seven hundred thirty thousand, two hundred sixteen".