30666222 has 32 divisors (see below), whose sum is σ = 71112960. Its totient is φ = 9777240.

The previous prime is 30666221. The next prime is 30666227. The reversal of 30666222 is 22266603.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30666221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11104 + ... + 13587.

It is an arithmetic number, because the mean of its divisors is an integer number (2222280).

Almost surely, 2^30666222 is an apocalyptic number.

30666222 is an abundant number, since it is smaller than the sum of its proper divisors (40446738).

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

30666222 is a wasteful number, since it uses less digits than its factorization.

30666222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24725 (or 24719 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 30666222 is about 5537.7090931178. The cubic root of 30666222 is about 313.0065495538.

The spelling of 30666222 in words is "thirty million, six hundred sixty-six thousand, two hundred twenty-two".