28587844 has 12 divisors (see below), whose sum is σ = 51093504. Its totient is φ = 13989704.

The previous prime is 28587817. The next prime is 28587847. The reversal of 28587844 is 44878582.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28587794 and 28587803.

It is not an unprimeable number, because it can be changed into a prime (28587847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75844 + ... + 76219.

It is an arithmetic number, because the mean of its divisors is an integer number (4257792).

Almost surely, 2^28587844 is an apocalyptic number.

It is an amenable number.

28587844 is a deficient number, since it is larger than the sum of its proper divisors (22505660).

28587844 is a wasteful number, since it uses less digits than its factorization.

28587844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152114 (or 152112 counting only the distinct ones).

The product of its digits is 573440, while the sum is 46.

The square root of 28587844 is about 5346.7601404963. The cubic root of 28587844 is about 305.7692452007.

The spelling of 28587844 in words is "twenty-eight million, five hundred eighty-seven thousand, eight hundred forty-four".