30025828 has 36 divisors (see below), whose sum is σ = 61446000. Its totient is φ = 12800592.

The previous prime is 30025819. The next prime is 30025843. The reversal of 30025828 is 82852003.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 30025796 and 30025805.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59923 + ... + 60421.

Almost surely, 2^30025828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30025828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30723000).

30025828 is an abundant number, since it is smaller than the sum of its proper divisors (31420172).

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

30025828 is a wasteful number, since it uses less digits than its factorization.

30025828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 815 counting only the distinct ones).

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

The square root of 30025828 is about 5479.5828308367. The cubic root of 30025828 is about 310.8123956856.

The spelling of 30025828 in words is "thirty million, twenty-five thousand, eight hundred twenty-eight".