28973276 has 12 divisors (see below), whose sum is σ = 51040080. Its totient is φ = 14390400.

The previous prime is 28973249. The next prime is 28973293. The reversal of 28973276 is 67237982.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23381 + ... + 24588.

It is an arithmetic number, because the mean of its divisors is an integer number (4253340).

Almost surely, 2^28973276 is an apocalyptic number.

It is an amenable number.

28973276 is a deficient number, since it is larger than the sum of its proper divisors (22066804).

28973276 is a wasteful number, since it uses less digits than its factorization.

28973276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48124 (or 48122 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 28973276 is about 5382.6829741310. The cubic root of 28973276 is about 307.1372804674.

The spelling of 28973276 in words is "twenty-eight million, nine hundred seventy-three thousand, two hundred seventy-six".