28618752 has 104 divisors (see below), whose sum is σ = 81385776. Its totient is φ = 8912896.

The previous prime is 28618729. The next prime is 28618753. The reversal of 28618752 is 25781682.

It is a self number, because there is not a number n which added to its sum of digits gives 28618752.

It is not an unprimeable number, because it can be changed into a prime (28618753) 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, 208828 + ... + 208964.

Almost surely, 2^28618752 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 28618752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40692888).

28618752 is an abundant number, since it is smaller than the sum of its proper divisors (52767024).

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

28618752 is a wasteful number, since it uses less digits than its factorization.

28618752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 159 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 28618752 is about 5349.6497081585. The cubic root of 28618752 is about 305.8794005516.

The spelling of 28618752 in words is "twenty-eight million, six hundred eighteen thousand, seven hundred fifty-two".