28185696 has 288 divisors, whose sum is σ = 105670656. Its totient is φ = 6912000.

The previous prime is 28185691. The next prime is 28185713. The reversal of 28185696 is 69658182.

28185696 is a `hidden beast` number, since 2 + 81 + 8 + 569 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28185691) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 687436 + ... + 687476.

It is an arithmetic number, because the mean of its divisors is an integer number (366912).

Almost surely, 2^28185696 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 28185696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52835328).

28185696 is an abundant number, since it is smaller than the sum of its proper divisors (77484960).

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

28185696 is a wasteful number, since it uses less digits than its factorization.

28185696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 95 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 28185696 is about 5309.0202485958. The cubic root of 28185696 is about 304.3287072379.

The spelling of 28185696 in words is "twenty-eight million, one hundred eighty-five thousand, six hundred ninety-six".