28486438 has 8 divisors (see below), whose sum is σ = 42764400. Its totient is φ = 14231640.

The previous prime is 28486433. The next prime is 28486501. The reversal of 28486438 is 83468482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28486438² = 1622954299855688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28486394 and 28486403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28486433) by changing a digit.

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, 2293 + ... + 7888.

It is an arithmetic number, because the mean of its divisors is an integer number (5345550).

Almost surely, 2^28486438 is an apocalyptic number.

28486438 is a deficient number, since it is larger than the sum of its proper divisors (14277962).

28486438 is a wasteful number, since it uses less digits than its factorization.

28486438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11582.

The product of its digits is 294912, while the sum is 43.

The square root of 28486438 is about 5337.2687771931. The cubic root of 28486438 is about 305.4072781738.

The spelling of 28486438 in words is "twenty-eight million, four hundred eighty-six thousand, four hundred thirty-eight".