28670048 has 48 divisors (see below), whose sum is σ = 62415360. Its totient is φ = 12854400.

The previous prime is 28670023. The next prime is 28670063. The reversal of 28670048 is 84007682.

It is a congruent number.

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, 27293 + ... + 28323.

It is an arithmetic number, because the mean of its divisors is an integer number (1300320).

Almost surely, 2^28670048 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 28670048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31207680).

28670048 is an abundant number, since it is smaller than the sum of its proper divisors (33745312).

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

28670048 is a wasteful number, since it uses less digits than its factorization.

28670048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 28670048 is about 5354.4418943528. The cubic root of 28670048 is about 306.0620433239.

It can be divided in two parts, 28 and 670048, that added together give a palindrome (670076).

The spelling of 28670048 in words is "twenty-eight million, six hundred seventy thousand, forty-eight".