28654656 has 56 divisors (see below), whose sum is σ = 80284320. Its totient is φ = 8988672.

The previous prime is 28654601. The next prime is 28654657. The reversal of 28654656 is 65645682.

It is not an unprimeable number, because it can be changed into a prime (28654657) 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 7 ways as a sum of consecutive naturals, for example, 1126 + ... + 7653.

Almost surely, 2^28654656 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 28654656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40142160).

28654656 is an abundant number, since it is smaller than the sum of its proper divisors (51629664).

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

28654656 is a wasteful number, since it uses less digits than its factorization.

28654656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8811 (or 8801 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 28654656 is about 5353.0043900598. The cubic root of 28654656 is about 306.0072619918.

The spelling of 28654656 in words is "twenty-eight million, six hundred fifty-four thousand, six hundred fifty-six".