28724976 has 240 divisors, whose sum is σ = 101779200. Its totient is φ = 7717248.

The previous prime is 28724963. The next prime is 28724981. The reversal of 28724976 is 67942782.

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

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 486835 + ... + 486893.

It is an arithmetic number, because the mean of its divisors is an integer number (424080).

Almost surely, 2^28724976 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 28724976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50889600).

28724976 is an abundant number, since it is smaller than the sum of its proper divisors (73054224).

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

28724976 is a wasteful number, since it uses less digits than its factorization.

28724976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 94 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 28724976 is about 5359.5686393590. The cubic root of 28724976 is about 306.2573766931.

The spelling of 28724976 in words is "twenty-eight million, seven hundred twenty-four thousand, nine hundred seventy-six".