28847616 has 80 divisors (see below), whose sum is σ = 87863424. Its totient is φ = 8239104.

The previous prime is 28847603. The next prime is 28847617. The reversal of 28847616 is 61674882.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28847617) 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, 9411 + ... + 12093.

Almost surely, 2^28847616 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 28847616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43931712).

28847616 is an abundant number, since it is smaller than the sum of its proper divisors (59015808).

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

28847616 is an equidigital number, since it uses as much as digits as its factorization.

28847616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711 (or 2695 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 28847616 is about 5370.9976726861. The cubic root of 28847616 is about 306.6926086015.

The spelling of 28847616 in words is "twenty-eight million, eight hundred forty-seven thousand, six hundred sixteen".