30706668 has 96 divisors (see below), whose sum is σ = 83328000. Its totient is φ = 9771840.

The previous prime is 30706657. The next prime is 30706699. The reversal of 30706668 is 86660703.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 388653 + ... + 388731.

It is an arithmetic number, because the mean of its divisors is an integer number (868000).

Almost surely, 2^30706668 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 30706668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41664000).

30706668 is an abundant number, since it is smaller than the sum of its proper divisors (52621332).

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

30706668 is a wasteful number, since it uses less digits than its factorization.

30706668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 30706668 is about 5541.3597609251. The cubic root of 30706668 is about 313.1440983009.

The spelling of 30706668 in words is "thirty million, seven hundred six thousand, six hundred sixty-eight".