28676736 has 192 divisors, whose sum is σ = 94199040. Its totient is φ = 8294400.

The previous prime is 28676729. The next prime is 28676759. The reversal of 28676736 is 63767682.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×28676736² = 1644710375227392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28676691 and 28676700.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392796 + ... + 392868.

It is an arithmetic number, because the mean of its divisors is an integer number (490620).

Almost surely, 2^28676736 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 28676736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47099520).

28676736 is an abundant number, since it is smaller than the sum of its proper divisors (65522304).

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

28676736 is a wasteful number, since it uses less digits than its factorization.

28676736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 120 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 28676736 is about 5355.0663861431. The cubic root of 28676736 is about 306.0858403286.

The spelling of 28676736 in words is "twenty-eight million, six hundred seventy-six thousand, seven hundred thirty-six".