28477656 has 112 divisors (see below), whose sum is σ = 84598200. Its totient is φ = 8957952.

The previous prime is 28477651. The next prime is 28477693. The reversal of 28477656 is 65677482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28477651) 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 27 ways as a sum of consecutive naturals, for example, 110680 + ... + 110936.

Almost surely, 2^28477656 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 28477656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42299100).

28477656 is an abundant number, since it is smaller than the sum of its proper divisors (56120544).

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

28477656 is a wasteful number, since it uses less digits than its factorization.

28477656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 281 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 28477656 is about 5336.4460083468. The cubic root of 28477656 is about 305.3758905783.

The spelling of 28477656 in words is "twenty-eight million, four hundred seventy-seven thousand, six hundred fifty-six".