30028258 has 24 divisors (see below), whose sum is σ = 49482468. Its totient is φ = 13658112.

The previous prime is 30028249. The next prime is 30028259. The reversal of 30028258 is 85282003.

It can be written as a sum of positive squares in 6 ways, for example, as 3433609 + 26594649 = 1853^2 + 5157^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30028259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24066 + ... + 25282.

Almost surely, 2^30028258 is an apocalyptic number.

30028258 is a deficient number, since it is larger than the sum of its proper divisors (19454210).

30028258 is a wasteful number, since it uses less digits than its factorization.

30028258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 30028258 is about 5479.8045585586. The cubic root of 30028258 is about 310.8207801754.

The spelling of 30028258 in words is "thirty million, twenty-eight thousand, two hundred fifty-eight".