30828260 has 48 divisors (see below), whose sum is σ = 70371840. Its totient is φ = 11301120.

The previous prime is 30828253. The next prime is 30828263. The reversal of 30828260 is 6282803.

It is a super-2 number, since 2×30828260² = 1900763229255200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30828263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10472 + ... + 13088.

It is an arithmetic number, because the mean of its divisors is an integer number (1466080).

Almost surely, 2^30828260 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 30828260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35185920).

30828260 is an abundant number, since it is smaller than the sum of its proper divisors (39543580).

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

30828260 is a wasteful number, since it uses less digits than its factorization.

30828260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676 (or 2674 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 30828260 is about 5552.3202357213. The cubic root of 30828260 is about 313.5568823693.

The spelling of 30828260 in words is "thirty million, eight hundred twenty-eight thousand, two hundred sixty".