28062438 has 16 divisors (see below), whose sum is σ = 58565376. Its totient is φ = 8947400.

The previous prime is 28062413. The next prime is 28062443. The reversal of 28062438 is 83426082.

It is a junction number, because it is equal to n+sod(n) for n = 28062399 and 28062408.

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 7 ways as a sum of consecutive naturals, for example, 101538 + ... + 101813.

It is an arithmetic number, because the mean of its divisors is an integer number (3660336).

Almost surely, 2^28062438 is an apocalyptic number.

28062438 is an abundant number, since it is smaller than the sum of its proper divisors (30502938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28062438 is a wasteful number, since it uses less digits than its factorization.

28062438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203379.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 28062438 is about 5297.3991731792. The cubic root of 28062438 is about 303.8844421711.

The spelling of 28062438 in words is "twenty-eight million, sixty-two thousand, four hundred thirty-eight".