28262912 has 20 divisors (see below), whose sum is σ = 56471646. Its totient is φ = 14131200.

The previous prime is 28262903. The next prime is 28262953. The reversal of 28262912 is 21926282.

It can be written as a sum of positive squares in only one way, i.e., 28047616 + 215296 = 5296^2 + 464^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27089 + ... + 28112.

Almost surely, 2^28262912 is an apocalyptic number.

It is an amenable number.

28262912 is a deficient number, since it is larger than the sum of its proper divisors (28208734).

28262912 is an frugal number, since it uses more digits than its factorization.

28262912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55219 (or 55203 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 28262912 is about 5316.2874263907. The cubic root of 28262912 is about 304.6063613023.

The spelling of 28262912 in words is "twenty-eight million, two hundred sixty-two thousand, nine hundred twelve".