28286038 has 16 divisors (see below), whose sum is σ = 46403280. Its totient is φ = 12824800.

The previous prime is 28286033. The next prime is 28286039. The reversal of 28286038 is 83068282.

It is a junction number, because it is equal to n+sod(n) for n = 28285988 and 28286006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28286033) 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, 8748 + ... + 11536.

It is an arithmetic number, because the mean of its divisors is an integer number (2900205).

Almost surely, 2^28286038 is an apocalyptic number.

28286038 is a deficient number, since it is larger than the sum of its proper divisors (18117242).

28286038 is a wasteful number, since it uses less digits than its factorization.

28286038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 28286038 is about 5318.4619957277. The cubic root of 28286038 is about 304.6894195785.

It can be divided in two parts, 282 and 86038, that added together give a triangular number (86320 = T₄₁₅).

The spelling of 28286038 in words is "twenty-eight million, two hundred eighty-six thousand, thirty-eight".