30228786 has 36 divisors (see below), whose sum is σ = 76191102. Its totient is φ = 8636544.

The previous prime is 30228769. The next prime is 30228787. The reversal of 30228786 is 68782203.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19633761 + 10595025 = 4431^2 + 3255^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30228786.

It is not an unprimeable number, because it can be changed into a prime (30228787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16255 + ... + 18018.

Almost surely, 2^30228786 is an apocalyptic number.

30228786 is an abundant number, since it is smaller than the sum of its proper divisors (45962316).

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

30228786 is a wasteful number, since it uses less digits than its factorization.

30228786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34295 (or 34285 counting only the distinct ones).

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

The square root of 30228786 is about 5498.0711163098. The cubic root of 30228786 is about 311.5111303518.

The spelling of 30228786 in words is "thirty million, two hundred twenty-eight thousand, seven hundred eighty-six".