30267228 has 24 divisors (see below), whose sum is σ = 74341120. Its totient is φ = 9558000.

The previous prime is 30267217. The next prime is 30267239. The reversal of 30267228 is 82276203.

It is an interprime number because it is at equal distance from previous prime (30267217) and next prime (30267239).

It is a super-2 number, since 2×30267228² = 1832210181607968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30267195 and 30267204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66148 + ... + 66603.

Almost surely, 2^30267228 is an apocalyptic number.

30267228 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

30267228 is an abundant number, since it is smaller than the sum of its proper divisors (44073892).

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

30267228 is a wasteful number, since it uses less digits than its factorization.

30267228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132777 (or 132775 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 30267228 is about 5501.5659588884. The cubic root of 30267228 is about 311.6431241650.

The spelling of 30267228 in words is "thirty million, two hundred sixty-seven thousand, two hundred twenty-eight".