28025536 has 112 divisors (see below), whose sum is σ = 71396352. Its totient is φ = 10686720.

The previous prime is 28025533. The next prime is 28025561. The reversal of 28025536 is 63552082.

28025536 = T₃₅ + T₃₆ + ... + T₅₅₁.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 28025498 and 28025507.

It is not an unprimeable number, because it can be changed into a prime (28025533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 596265 + ... + 596311.

Almost surely, 2^28025536 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 28025536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35698176).

28025536 is an abundant number, since it is smaller than the sum of its proper divisors (43370816).

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

28025536 is an equidigital number, since it uses as much as digits as its factorization.

28025536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 28025536 is about 5293.9149974287. The cubic root of 28025536 is about 303.7511814436.

It can be divided in two parts, 28025 and 536, that added together give a 4-th power (28561 = 13⁴).

The spelling of 28025536 in words is "twenty-eight million, twenty-five thousand, five hundred thirty-six".