30949216 has 24 divisors (see below), whose sum is σ = 61621560. Its totient is φ = 15299328.

The previous prime is 30949211. The next prime is 30949223. The reversal of 30949216 is 61294903.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30949211) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2586 + ... + 8281.

It is an arithmetic number, because the mean of its divisors is an integer number (2567565).

Almost surely, 2^30949216 is an apocalyptic number.

It is an amenable number.

30949216 is a deficient number, since it is larger than the sum of its proper divisors (30672344).

30949216 is a wasteful number, since it uses less digits than its factorization.

30949216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10966 (or 10958 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 30949216 is about 5563.2019557086. The cubic root of 30949216 is about 313.9664318315.

The spelling of 30949216 in words is "thirty million, nine hundred forty-nine thousand, two hundred sixteen".