28894976 has 72 divisors (see below), whose sum is σ = 65146368. Its totient is φ = 12672000.

The previous prime is 28894967. The next prime is 28894997. The reversal of 28894976 is 67949882.

It is a super-3 number, since 3×28894976³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 87131 + ... + 87461.

Almost surely, 2^28894976 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 28894976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32573184).

28894976 is an abundant number, since it is smaller than the sum of its proper divisors (36251392).

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

28894976 is a wasteful number, since it uses less digits than its factorization.

28894976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 375 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 28894976 is about 5375.4047289483. The cubic root of 28894976 is about 306.8603523357.

The spelling of 28894976 in words is "twenty-eight million, eight hundred ninety-four thousand, nine hundred seventy-six".