28237752 has 48 divisors (see below), whose sum is σ = 76953240. Its totient is φ = 9354048.

The previous prime is 28237739. The next prime is 28237757. The reversal of 28237752 is 25773282.

It is a happy number.

28237752 is a `hidden beast` number, since 282 + 377 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28237757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11323 + ... + 13589.

Almost surely, 2^28237752 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 28237752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38476620).

28237752 is an abundant number, since it is smaller than the sum of its proper divisors (48715488).

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

28237752 is a wasteful number, since it uses less digits than its factorization.

28237752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452 (or 2445 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 28237752 is about 5313.9205865350. The cubic root of 28237752 is about 304.5159463285.

The spelling of 28237752 in words is "twenty-eight million, two hundred thirty-seven thousand, seven hundred fifty-two".