28486449 has 12 divisors (see below), whose sum is σ = 41195856. Its totient is φ = 18968472.

The previous prime is 28486433. The next prime is 28486501. The reversal of 28486449 is 94468482.

It is not a de Polignac number, because 28486449 - 2⁴ = 28486433 is a prime.

It is a super-2 number, since 2×28486449² = 1622955553259202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28486429) 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 11 ways as a sum of consecutive naturals, for example, 10314 + ... + 12780.

It is an arithmetic number, because the mean of its divisors is an integer number (3432988).

Almost surely, 2^28486449 is an apocalyptic number.

It is an amenable number.

28486449 is a deficient number, since it is larger than the sum of its proper divisors (12709407).

28486449 is a wasteful number, since it uses less digits than its factorization.

28486449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756 (or 3753 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 28486449 is about 5337.2698076826. The cubic root of 28486449 is about 305.4073174847.

The spelling of 28486449 in words is "twenty-eight million, four hundred eighty-six thousand, four hundred forty-nine".