30135228 has 12 divisors (see below), whose sum is σ = 70315560. Its totient is φ = 10045072.

The previous prime is 30135227. The next prime is 30135229. The reversal of 30135228 is 82253103.

It is an interprime number because it is at equal distance from previous prime (30135227) and next prime (30135229).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×30135228² = 1816263933223968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30135198 and 30135207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30135227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255623 + ... + 1255646.

It is an arithmetic number, because the mean of its divisors is an integer number (5859630).

Almost surely, 2^30135228 is an apocalyptic number.

It is an amenable number.

30135228 is an abundant number, since it is smaller than the sum of its proper divisors (40180332).

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

30135228 is a wasteful number, since it uses less digits than its factorization.

30135228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511276 (or 2511274 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 30135228 is about 5489.5562662204. The cubic root of 30135228 is about 311.1894228975.

The spelling of 30135228 in words is "thirty million, one hundred thirty-five thousand, two hundred twenty-eight".