28488243 has 32 divisors (see below), whose sum is σ = 46310400. Its totient is φ = 15206400.

The previous prime is 28488241. The next prime is 28488247. The reversal of 28488243 is 34288482.

It is not a de Polignac number, because 28488243 - 2¹ = 28488241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28488241) 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 31 ways as a sum of consecutive naturals, for example, 70843 + ... + 71243.

It is an arithmetic number, because the mean of its divisors is an integer number (1447200).

Almost surely, 2^28488243 is an apocalyptic number.

28488243 is a deficient number, since it is larger than the sum of its proper divisors (17822157).

28488243 is a wasteful number, since it uses less digits than its factorization.

28488243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627.

The product of its digits is 98304, while the sum is 39.

The square root of 28488243 is about 5337.4378684908. The cubic root of 28488243 is about 305.4137285941.

The spelling of 28488243 in words is "twenty-eight million, four hundred eighty-eight thousand, two hundred forty-three".