30240028 has 24 divisors (see below), whose sum is σ = 65133152. Its totient is φ = 11962944.

The previous prime is 30240017. The next prime is 30240053. The reversal of 30240028 is 82004203.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30239987 and 30240014.

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, 41175 + ... + 41902.

Almost surely, 2^30240028 is an apocalyptic number.

It is an amenable number.

30240028 is an abundant number, since it is smaller than the sum of its proper divisors (34893124).

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

30240028 is a wasteful number, since it uses less digits than its factorization.

30240028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83101 (or 83099 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 30240028 is about 5499.0933798218. The cubic root of 30240028 is about 311.5497422683.

The spelling of 30240028 in words is "thirty million, two hundred forty thousand, twenty-eight".