28486481 has 4 divisors (see below), whose sum is σ = 28710912. Its totient is φ = 28262052.

The previous prime is 28486433. The next prime is 28486501. The reversal of 28486481 is 18468482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28486481 is a prime.

It is a super-2 number, since 2×28486481² = 1622959199526722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28486421) 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, 112025 + ... + 112278.

It is an arithmetic number, because the mean of its divisors is an integer number (7177728).

Almost surely, 2^28486481 is an apocalyptic number.

It is an amenable number.

28486481 is a deficient number, since it is larger than the sum of its proper divisors (224431).

28486481 is a wasteful number, since it uses less digits than its factorization.

28486481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224430.

The product of its digits is 98304, while the sum is 41.

The square root of 28486481 is about 5337.2728054691. The cubic root of 28486481 is about 305.4074318435.

The spelling of 28486481 in words is "twenty-eight million, four hundred eighty-six thousand, four hundred eighty-one".