28262028 has 12 divisors (see below), whose sum is σ = 65944760. Its totient is φ = 9420672.

The previous prime is 28262021. The next prime is 28262029. The reversal of 28262028 is 82026282.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 28261986 and 28262004.

It is not an unprimeable number, because it can be changed into a prime (28262021) 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, 1177573 + ... + 1177596.

Almost surely, 2^28262028 is an apocalyptic number.

It is an amenable number.

28262028 is an abundant number, since it is smaller than the sum of its proper divisors (37682732).

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

28262028 is a wasteful number, since it uses less digits than its factorization.

28262028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355176 (or 2355174 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 28262028 is about 5316.2042850139. The cubic root of 28262028 is about 304.6031854697.

The spelling of 28262028 in words is "twenty-eight million, two hundred sixty-two thousand, twenty-eight".