28710976 has 56 divisors (see below), whose sum is σ = 68559680. Its totient is φ = 11653632.

The previous prime is 28710961. The next prime is 28711009. The reversal of 28710976 is 67901782.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6826 + ... + 10198.

It is an arithmetic number, because the mean of its divisors is an integer number (1224280).

Almost surely, 2^28710976 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 28710976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34279840).

28710976 is an abundant number, since it is smaller than the sum of its proper divisors (39848704).

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

28710976 is a wasteful number, since it uses less digits than its factorization.

28710976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411 (or 3401 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 28710976 is about 5358.2624049220. The cubic root of 28710976 is about 306.2076139590.

The spelling of 28710976 in words is "twenty-eight million, seven hundred ten thousand, nine hundred seventy-six".