30867228 has 36 divisors (see below), whose sum is σ = 89172720. Its totient is φ = 8819136.

The previous prime is 30867217. The next prime is 30867251. The reversal of 30867228 is 82276803.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 30867192 and 30867201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60993 + ... + 61496.

It is an arithmetic number, because the mean of its divisors is an integer number (2477020).

Almost surely, 2^30867228 is an apocalyptic number.

It is an amenable number.

30867228 is an abundant number, since it is smaller than the sum of its proper divisors (58305492).

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

30867228 is a wasteful number, since it uses less digits than its factorization.

30867228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122506 (or 122501 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 30867228 is about 5555.8282910832. The cubic root of 30867228 is about 313.6889423680.

The spelling of 30867228 in words is "thirty million, eight hundred sixty-seven thousand, two hundred twenty-eight".