28315573 has 24 divisors (see below), whose sum is σ = 34320384. Its totient is φ = 23195040.

The previous prime is 28315541. The next prime is 28315579. The reversal of 28315573 is 37551382.

It is not a de Polignac number, because 28315573 - 2⁵ = 28315541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28315579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73740 + ... + 74122.

It is an arithmetic number, because the mean of its divisors is an integer number (1430016).

Almost surely, 2^28315573 is an apocalyptic number.

It is an amenable number.

28315573 is a deficient number, since it is larger than the sum of its proper divisors (6004811).

28315573 is a wasteful number, since it uses less digits than its factorization.

28315573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 454 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 28315573 is about 5321.2379198829. The cubic root of 28315573 is about 304.7954303214.

The spelling of 28315573 in words is "twenty-eight million, three hundred fifteen thousand, five hundred seventy-three".