28267892 has 6 divisors (see below), whose sum is σ = 49468818. Its totient is φ = 14133944.

The previous prime is 28267867. The next prime is 28267907. The reversal of 28267892 is 29876282.

It can be written as a sum of positive squares in only one way, i.e., 20394256 + 7873636 = 4516^2 + 2806^2 .

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, 3533483 + ... + 3533490.

It is an arithmetic number, because the mean of its divisors is an integer number (8244803).

Almost surely, 2^28267892 is an apocalyptic number.

It is an amenable number.

28267892 is a deficient number, since it is larger than the sum of its proper divisors (21200926).

28267892 is a wasteful number, since it uses less digits than its factorization.

28267892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7066977 (or 7066975 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 28267892 is about 5316.7557777276. The cubic root of 28267892 is about 304.6242510677.

The spelling of 28267892 in words is "twenty-eight million, two hundred sixty-seven thousand, eight hundred ninety-two".