28538176 has 28 divisors (see below), whose sum is σ = 57226708. Its totient is φ = 14118912.

The previous prime is 28538161. The next prime is 28538183. The reversal of 28538176 is 67183582.

It can be written as a sum of positive squares in 2 ways, for example, as 6635776 + 21902400 = 2576^2 + 4680^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3910 + ... + 8506.

It is an arithmetic number, because the mean of its divisors is an integer number (2043811).

Almost surely, 2^28538176 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 28538176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28613354).

28538176 is an abundant number, since it is smaller than the sum of its proper divisors (28688532).

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

28538176 is an equidigital number, since it uses as much as digits as its factorization.

28538176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4706 (or 4696 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 28538176 is about 5342.1134394545. The cubic root of 28538176 is about 305.5920632424.

The spelling of 28538176 in words is "twenty-eight million, five hundred thirty-eight thousand, one hundred seventy-six".