28879104 has 72 divisors (see below), whose sum is σ = 79405312. Its totient is φ = 9308160.

The previous prime is 28879091. The next prime is 28879139. The reversal of 28879104 is 40197882.

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, 23202 + ... + 24414.

Almost surely, 2^28879104 is an apocalyptic number.

28879104 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 28879104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39702656).

28879104 is an abundant number, since it is smaller than the sum of its proper divisors (50526208).

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

28879104 is a wasteful number, since it uses less digits than its factorization.

28879104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263 (or 1249 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 28879104 is about 5373.9281722033. The cubic root of 28879104 is about 306.8041559509.

The spelling of 28879104 in words is "twenty-eight million, eight hundred seventy-nine thousand, one hundred four".