28541320 has 16 divisors (see below), whose sum is σ = 64218060. Its totient is φ = 11416512.

The previous prime is 28541299. The next prime is 28541327. The reversal of 28541320 is 2314582.

28541320 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 28536964 + 4356 = 5342^2 + 66^2 .

It is not an unprimeable number, because it can be changed into a prime (28541327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356727 + ... + 356806.

Almost surely, 2^28541320 is an apocalyptic number.

28541320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28541320 is an abundant number, since it is smaller than the sum of its proper divisors (35676740).

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

28541320 is a wasteful number, since it uses less digits than its factorization.

28541320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713544 (or 713540 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28541320 is about 5342.4076969097. The cubic root of 28541320 is about 305.6032850080.

The spelling of 28541320 in words is "twenty-eight million, five hundred forty-one thousand, three hundred twenty".