28591248 has 40 divisors (see below), whose sum is σ = 84413248. Its totient is φ = 8168832.

The previous prime is 28591243. The next prime is 28591261. The reversal of 28591248 is 84219582.

It is not an unprimeable number, because it can be changed into a prime (28591243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42211 + ... + 42882.

Almost surely, 2^28591248 is an apocalyptic number.

28591248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28591248 is an abundant number, since it is smaller than the sum of its proper divisors (55822000).

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

28591248 is a wasteful number, since it uses less digits than its factorization.

28591248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85111 (or 85105 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 28591248 is about 5347.0784546330. The cubic root of 28591248 is about 305.7813808623.

The spelling of 28591248 in words is "twenty-eight million, five hundred ninety-one thousand, two hundred forty-eight".