28986446 has 4 divisors (see below), whose sum is σ = 43479672. Its totient is φ = 14493222.

The previous prime is 28986427. The next prime is 28986449. The reversal of 28986446 is 64468982.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28986446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28986449) 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 as a sum of consecutive naturals, namely, 7246610 + ... + 7246613.

It is an arithmetic number, because the mean of its divisors is an integer number (10869918).

Almost surely, 2^28986446 is an apocalyptic number.

28986446 is a deficient number, since it is larger than the sum of its proper divisors (14493226).

28986446 is a wasteful number, since it uses less digits than its factorization.

28986446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14493225.

The product of its digits is 663552, while the sum is 47.

The square root of 28986446 is about 5383.9062027491. The cubic root of 28986446 is about 307.1838105324.

The spelling of 28986446 in words is "twenty-eight million, nine hundred eighty-six thousand, four hundred forty-six".