28081276 has 6 divisors (see below), whose sum is σ = 49142240. Its totient is φ = 14040636.

The previous prime is 28081253. The next prime is 28081337. The reversal of 28081276 is 67218082.

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, 3510156 + ... + 3510163.

Almost surely, 2^28081276 is an apocalyptic number.

It is an amenable number.

28081276 is a deficient number, since it is larger than the sum of its proper divisors (21060964).

28081276 is a wasteful number, since it uses less digits than its factorization.

28081276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020323 (or 7020321 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 28081276 is about 5299.1769172203. The cubic root of 28081276 is about 303.9524250343.

The spelling of 28081276 in words is "twenty-eight million, eighty-one thousand, two hundred seventy-six".