30678648 has 128 divisors (see below), whose sum is σ = 103057920. Its totient is φ = 7349760.

The previous prime is 30678629. The next prime is 30678667. The reversal of 30678648 is 84687603.

It is an interprime number because it is at equal distance from previous prime (30678629) and next prime (30678667).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 23386 + ... + 24662.

It is an arithmetic number, because the mean of its divisors is an integer number (805140).

Almost surely, 2^30678648 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 30678648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51528960).

30678648 is an abundant number, since it is smaller than the sum of its proper divisors (72379272).

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

30678648 is a wasteful number, since it uses less digits than its factorization.

30678648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 30678648 is about 5538.8309235795. The cubic root of 30678648 is about 313.0488207556.

The spelling of 30678648 in words is "thirty million, six hundred seventy-eight thousand, six hundred forty-eight".