30649916 has 24 divisors (see below), whose sum is σ = 59090304. Its totient is φ = 13794480.

The previous prime is 30649903. The next prime is 30649921. The reversal of 30649916 is 61994603.

It is a self number, because there is not a number n which added to its sum of digits gives 30649916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1151 + ... + 7913.

It is an arithmetic number, because the mean of its divisors is an integer number (2462096).

Almost surely, 2^30649916 is an apocalyptic number.

It is an amenable number.

30649916 is a deficient number, since it is larger than the sum of its proper divisors (28440388).

30649916 is a wasteful number, since it uses less digits than its factorization.

30649916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6881 (or 6879 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 30649916 is about 5536.2366278908. The cubic root of 30649916 is about 312.9510619049.

It can be divided in two parts, 30 and 649916, that added together give a palindrome (649946).

The spelling of 30649916 in words is "thirty million, six hundred forty-nine thousand, nine hundred sixteen".