28508160 has 136 divisors (see below), whose sum is σ = 94371120. Its totient is φ = 7340032.

The previous prime is 28508153. The next prime is 28508171. The reversal of 28508160 is 6180582.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 983026 + ... + 983054.

Almost surely, 2^28508160 is an apocalyptic number.

28508160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28508160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47185560).

28508160 is an abundant number, since it is smaller than the sum of its proper divisors (65862960).

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

28508160 is an frugal number, since it uses more digits than its factorization.

28508160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 28508160 is about 5339.3033253412. The cubic root of 28508160 is about 305.4848866995.

The spelling of 28508160 in words is "twenty-eight million, five hundred eight thousand, one hundred sixty".