28130610 has 64 divisors (see below), whose sum is σ = 71746560. Its totient is φ = 7043520.

The previous prime is 28130603. The next prime is 28130647. The reversal of 28130610 is 1603182.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40365 + ... + 41055.

It is an arithmetic number, because the mean of its divisors is an integer number (1121040).

Almost surely, 2^28130610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28130610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35873280).

28130610 is an abundant number, since it is smaller than the sum of its proper divisors (43615950).

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

28130610 is a wasteful number, since it uses less digits than its factorization.

28130610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 28130610 is about 5303.8297483988. The cubic root of 28130610 is about 304.1303183771.

Adding to 28130610 its reverse (1603182), we get a palindrome (29733792).

The spelling of 28130610 in words is "twenty-eight million, one hundred thirty thousand, six hundred ten".