30666168 has 128 divisors (see below), whose sum is σ = 93676800. Its totient is φ = 9237888.

The previous prime is 30666149. The next prime is 30666173. The reversal of 30666168 is 86166603.

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

It is a congruent number.

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, 188055 + ... + 188217.

It is an arithmetic number, because the mean of its divisors is an integer number (731850).

Almost surely, 2^30666168 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 30666168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46838400).

30666168 is an abundant number, since it is smaller than the sum of its proper divisors (63010632).

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

30666168 is a wasteful number, since it uses less digits than its factorization.

30666168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 30666168 is about 5537.7042174533. The cubic root of 30666168 is about 313.0063658298.

The spelling of 30666168 in words is "thirty million, six hundred sixty-six thousand, one hundred sixty-eight".