28738286 has 16 divisors (see below), whose sum is σ = 43763280. Its totient is φ = 14152320.

The previous prime is 28738261. The next prime is 28738289. The reversal of 28738286 is 68283782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28738289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52265 + ... + 52811.

It is an arithmetic number, because the mean of its divisors is an integer number (2735205).

Almost surely, 2^28738286 is an apocalyptic number.

28738286 is a deficient number, since it is larger than the sum of its proper divisors (15024994).

28738286 is a wasteful number, since it uses less digits than its factorization.

28738286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899.

The product of its digits is 258048, while the sum is 44.

The square root of 28738286 is about 5360.8101999605. The cubic root of 28738286 is about 306.3046718443.

The spelling of 28738286 in words is "twenty-eight million, seven hundred thirty-eight thousand, two hundred eighty-six".