28851072 has 32 divisors (see below), whose sum is σ = 76636680. Its totient is φ = 9616896.

The previous prime is 28851061. The next prime is 28851073. The reversal of 28851072 is 27015882.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28851073) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 37183 + ... + 37950.

Almost surely, 2^28851072 is an apocalyptic number.

It is an amenable number.

28851072 is an abundant number, since it is smaller than the sum of its proper divisors (47785608).

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

28851072 is an equidigital number, since it uses as much as digits as its factorization.

28851072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75150 (or 75138 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 28851072 is about 5371.3193909877. The cubic root of 28851072 is about 306.7048555676.

It can be divided in two parts, 288 and 51072, that added together give a triangular number (51360 = T₃₂₀).

The spelling of 28851072 in words is "twenty-eight million, eight hundred fifty-one thousand, seventy-two".