28547118 has 24 divisors (see below), whose sum is σ = 62059608. Its totient is φ = 9483792.

The previous prime is 28547093. The next prime is 28547119. The reversal of 28547118 is 81174582.

It is a super-2 number, since 2×28547118² = 1629875892211848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28547119) 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 11 ways as a sum of consecutive naturals, for example, 3205 + ... + 8207.

It is an arithmetic number, because the mean of its divisors is an integer number (2585817).

Almost surely, 2^28547118 is an apocalyptic number.

28547118 is an abundant number, since it is smaller than the sum of its proper divisors (33512490).

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

28547118 is a wasteful number, since it uses less digits than its factorization.

28547118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328 (or 5325 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 28547118 is about 5342.9503085842. The cubic root of 28547118 is about 305.6239774390.

The spelling of 28547118 in words is "twenty-eight million, five hundred forty-seven thousand, one hundred eighteen".