28123248 has 40 divisors (see below), whose sum is σ = 73383696. Its totient is φ = 9280000.

The previous prime is 28123241. The next prime is 28123283. The reversal of 28123248 is 84232182.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28123241) 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, 1948 + ... + 7748.

Almost surely, 2^28123248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28123248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36691848).

28123248 is an abundant number, since it is smaller than the sum of its proper divisors (45260448).

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

28123248 is a wasteful number, since it uses less digits than its factorization.

28123248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5913 (or 5907 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 28123248 is about 5303.1356761825. The cubic root of 28123248 is about 304.1037849703.

The spelling of 28123248 in words is "twenty-eight million, one hundred twenty-three thousand, two hundred forty-eight".