28845688 has 8 divisors (see below), whose sum is σ = 54085680. Its totient is φ = 14422840.

The previous prime is 28845683. The next prime is 28845709. The reversal of 28845688 is 88654882.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28845683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1802848 + ... + 1802863.

It is an arithmetic number, because the mean of its divisors is an integer number (6760710).

Almost surely, 2^28845688 is an apocalyptic number.

It is an amenable number.

28845688 is a deficient number, since it is larger than the sum of its proper divisors (25239992).

28845688 is a wasteful number, since it uses less digits than its factorization.

28845688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605717 (or 3605713 counting only the distinct ones).

The product of its digits is 983040, while the sum is 49.

The square root of 28845688 is about 5370.8181872039. The cubic root of 28845688 is about 306.6857759569.

The spelling of 28845688 in words is "twenty-eight million, eight hundred forty-five thousand, six hundred eighty-eight".