28126844 has 12 divisors (see below), whose sum is σ = 49845600. Its totient is φ = 13885248.

The previous prime is 28126843. The next prime is 28126849. The reversal of 28126844 is 44862182.

It is a super-2 number, since 2×28126844² = 1582238706800672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28126843) 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, 44189 + ... + 44820.

It is an arithmetic number, because the mean of its divisors is an integer number (4153800).

Almost surely, 2^28126844 is an apocalyptic number.

It is an amenable number.

28126844 is a deficient number, since it is larger than the sum of its proper divisors (21718756).

28126844 is a wasteful number, since it uses less digits than its factorization.

28126844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89092 (or 89090 counting only the distinct ones).

The product of its digits is 24576, while the sum is 35.

The square root of 28126844 is about 5303.4747100368. The cubic root of 28126844 is about 304.1167459033.

The spelling of 28126844 in words is "twenty-eight million, one hundred twenty-six thousand, eight hundred forty-four".