28975104 has 112 divisors (see below), whose sum is σ = 86502240. Its totient is φ = 9584640.

The previous prime is 28975103. The next prime is 28975109. The reversal of 28975104 is 40157982.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (28975103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221119 + ... + 221249.

Almost surely, 2^28975104 is an apocalyptic number.

28975104 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 28975104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43251120).

28975104 is an abundant number, since it is smaller than the sum of its proper divisors (57527136).

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

28975104 is an equidigital number, since it uses as much as digits as its factorization.

28975104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 28975104 is about 5382.8527752485. The cubic root of 28975104 is about 307.1437396972.

It can be divided in two parts, 2897 and 5104, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 28975104 in words is "twenty-eight million, nine hundred seventy-five thousand, one hundred four".