28976444 has 72 divisors (see below), whose sum is σ = 64350720. Its totient is φ = 11340000.

The previous prime is 28976443. The next prime is 28976461. The reversal of 28976444 is 44467982.

It is a junction number, because it is equal to n+sod(n) for n = 28976395 and 28976404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28976443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115319 + ... + 115569.

It is an arithmetic number, because the mean of its divisors is an integer number (893760).

Almost surely, 2^28976444 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 28976444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32175360).

28976444 is an abundant number, since it is smaller than the sum of its proper divisors (35374276).

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

28976444 is a wasteful number, since it uses less digits than its factorization.

28976444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 310 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 28976444 is about 5382.9772431248. The cubic root of 28976444 is about 307.1484744086.

The spelling of 28976444 in words is "twenty-eight million, nine hundred seventy-six thousand, four hundred forty-four".