28179948 has 48 divisors (see below), whose sum is σ = 70326144. Its totient is φ = 8751360.

The previous prime is 28179917. The next prime is 28179959. The reversal of 28179948 is 84997182.

It is a junction number, because it is equal to n+sod(n) for n = 28179897 and 28179906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21183 + ... + 22473.

It is an arithmetic number, because the mean of its divisors is an integer number (1465128).

Almost surely, 2^28179948 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28179948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35163072).

28179948 is an abundant number, since it is smaller than the sum of its proper divisors (42146196).

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

28179948 is a wasteful number, since it uses less digits than its factorization.

28179948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422 (or 1420 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 28179948 is about 5308.4788781722. The cubic root of 28179948 is about 304.3080182528.

The spelling of 28179948 in words is "twenty-eight million, one hundred seventy-nine thousand, nine hundred forty-eight".