28186752 has 64 divisors (see below), whose sum is σ = 81689760. Its totient is φ = 8540160.

The previous prime is 28186751. The next prime is 28186783. The reversal of 28186752 is 25768182.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 28186752.

It is not an unprimeable number, because it can be changed into a prime (28186751) 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, 888 + ... + 7560.

Almost surely, 2^28186752 is an apocalyptic number.

28186752 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28186752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40844880).

28186752 is an abundant number, since it is smaller than the sum of its proper divisors (53503008).

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

28186752 is a wasteful number, since it uses less digits than its factorization.

28186752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6701 (or 6689 counting only the distinct ones).

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

The square root of 28186752 is about 5309.1197010427. The cubic root of 28186752 is about 304.3325078312.

The spelling of 28186752 in words is "twenty-eight million, one hundred eighty-six thousand, seven hundred fifty-two".