28023248 has 20 divisors (see below), whose sum is σ = 59231328. Its totient is φ = 12737760.

The previous prime is 28023241. The next prime is 28023253. The reversal of 28023248 is 84232082.

It is a self number, because there is not a number n which added to its sum of digits gives 28023248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28023241) 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, 79436 + ... + 79787.

Almost surely, 2^28023248 is an apocalyptic number.

It is an amenable number.

28023248 is an abundant number, since it is smaller than the sum of its proper divisors (31208080).

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

28023248 is a wasteful number, since it uses less digits than its factorization.

28023248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159242 (or 159236 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 28023248 is about 5293.6988958572. The cubic root of 28023248 is about 303.7429151537.

The spelling of 28023248 in words is "twenty-eight million, twenty-three thousand, two hundred forty-eight".