28654288 has 30 divisors (see below), whose sum is σ = 60122454. Its totient is φ = 13223808.

The previous prime is 28654267. The next prime is 28654289. The reversal of 28654288 is 88245682.

It can be written as a sum of positive squares in 3 ways, for example, as 2521744 + 26132544 = 1588^2 + 5112^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28654289) 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 5 ways as a sum of consecutive naturals, for example, 2595 + ... + 8002.

Almost surely, 2^28654288 is an apocalyptic number.

It is an amenable number.

28654288 is an abundant number, since it is smaller than the sum of its proper divisors (31468166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28654288 is a wasteful number, since it uses less digits than its factorization.

28654288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10631 (or 10612 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 28654288 is about 5352.9700167290. The cubic root of 28654288 is about 306.0059520109.

The spelling of 28654288 in words is "twenty-eight million, six hundred fifty-four thousand, two hundred eighty-eight".