28669248 has 112 divisors (see below), whose sum is σ = 86319360. Its totient is φ = 9326592.

The previous prime is 28669243. The next prime is 28669253. The reversal of 28669248 is 84296682.

It is an interprime number because it is at equal distance from previous prime (28669243) and next prime (28669253).

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 (28669241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81040 + ... + 81392.

Almost surely, 2^28669248 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 28669248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43159680).

28669248 is an abundant number, since it is smaller than the sum of its proper divisors (57650112).

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

28669248 is a wasteful number, since it uses less digits than its factorization.

28669248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 405 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 28669248 is about 5354.3671895005. The cubic root of 28669248 is about 306.0591965445.

The spelling of 28669248 in words is "twenty-eight million, six hundred sixty-nine thousand, two hundred forty-eight".