30919648 has 48 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 14716800.

The previous prime is 30919591. The next prime is 30919649. The reversal of 30919648 is 84691903.

It is a self number, because there is not a number n which added to its sum of digits gives 30919648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30919649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70213 + ... + 70651.

It is an arithmetic number, because the mean of its divisors is an integer number (1330560).

Almost surely, 2^30919648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30919648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31933440).

30919648 is an abundant number, since it is smaller than the sum of its proper divisors (32947232).

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

30919648 is a wasteful number, since it uses less digits than its factorization.

30919648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 30919648 is about 5560.5438582930. The cubic root of 30919648 is about 313.8664151097.

The spelling of 30919648 in words is "thirty million, nine hundred nineteen thousand, six hundred forty-eight".