28801276 has 12 divisors (see below), whose sum is σ = 57602608. Its totient is φ = 12343392.

The previous prime is 28801243. The next prime is 28801307. The reversal of 28801276 is 67210882.

28801276 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514281 + ... + 514336.

Almost surely, 2^28801276 is an apocalyptic number.

It is an amenable number.

28801276 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28801276 is a wasteful number, since it uses less digits than its factorization.

28801276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028628 (or 1028626 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 28801276 is about 5366.6820289635. The cubic root of 28801276 is about 306.5282997926.

The spelling of 28801276 in words is "twenty-eight million, eight hundred one thousand, two hundred seventy-six".