28718112 has 24 divisors (see below), whose sum is σ = 75385296. Its totient is φ = 9572672.

The previous prime is 28718093. The next prime is 28718119. The reversal of 28718112 is 21181782.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 28718112.

It is not an unprimeable number, because it can be changed into a prime (28718119) 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, 149478 + ... + 149669.

It is an arithmetic number, because the mean of its divisors is an integer number (3141054).

Almost surely, 2^28718112 is an apocalyptic number.

It is an amenable number.

28718112 is an abundant number, since it is smaller than the sum of its proper divisors (46667184).

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

28718112 is a wasteful number, since it uses less digits than its factorization.

28718112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299160 (or 299152 counting only the distinct ones).

The product of its digits is 1792, while the sum is 30.

The square root of 28718112 is about 5358.9282510592. The cubic root of 28718112 is about 306.2329807563.

Adding to 28718112 its reverse (21181782), we get a palindrome (49899894).

The spelling of 28718112 in words is "twenty-eight million, seven hundred eighteen thousand, one hundred twelve".