28252056 has 64 divisors (see below), whose sum is σ = 81204480. Its totient is φ = 8023680.

The previous prime is 28252051. The next prime is 28252057. The reversal of 28252056 is 65025282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28252051) 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, 35050 + ... + 35846.

It is an arithmetic number, because the mean of its divisors is an integer number (1268820).

Almost surely, 2^28252056 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 28252056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40602240).

28252056 is an abundant number, since it is smaller than the sum of its proper divisors (52952424).

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

28252056 is a wasteful number, since it uses less digits than its factorization.

28252056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 28252056 is about 5315.2663150589. The cubic root of 28252056 is about 304.5673557658.

The spelling of 28252056 in words is "twenty-eight million, two hundred fifty-two thousand, fifty-six".