28051104 has 48 divisors (see below), whose sum is σ = 75212928. Its totient is φ = 9149952.

The previous prime is 28051097. The next prime is 28051129. The reversal of 28051104 is 40115082.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1404 + ... + 7620.

It is an arithmetic number, because the mean of its divisors is an integer number (1566936).

Almost surely, 2^28051104 is an apocalyptic number.

28051104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28051104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37606464).

28051104 is an abundant number, since it is smaller than the sum of its proper divisors (47161824).

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

28051104 is a wasteful number, since it uses less digits than its factorization.

28051104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6277 (or 6269 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 28051104 is about 5296.3292948985. The cubic root of 28051104 is about 303.8435251980.

Adding to 28051104 its reverse (40115082), we get a palindrome (68166186).

The spelling of 28051104 in words is "twenty-eight million, fifty-one thousand, one hundred four".