28838042 has 16 divisors (see below), whose sum is σ = 44329032. Its totient is φ = 14064960.

The previous prime is 28838039. The next prime is 28838053. The reversal of 28838042 is 24083882.

It can be written as a sum of positive squares in 4 ways, for example, as 28826161 + 11881 = 5369^2 + 109^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28837993 and 28838011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20192 + ... + 21572.

Almost surely, 2^28838042 is an apocalyptic number.

28838042 is a deficient number, since it is larger than the sum of its proper divisors (15490990).

28838042 is a wasteful number, since it uses less digits than its factorization.

28838042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633.

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 28838042 is about 5370.1063304184. The cubic root of 28838042 is about 306.6586762778.

The spelling of 28838042 in words is "twenty-eight million, eight hundred thirty-eight thousand, forty-two".