28448604 has 48 divisors (see below), whose sum is σ = 74129440. Its totient is φ = 9434880.

The previous prime is 28448603. The next prime is 28448627. The reversal of 28448604 is 40684482.

28448604 is a `hidden beast` number, since 2 + 8 + 4 + 48 + 604 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28448603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25482 + ... + 26574.

Almost surely, 2^28448604 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 28448604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37064720).

28448604 is an abundant number, since it is smaller than the sum of its proper divisors (45680836).

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

28448604 is a wasteful number, since it uses less digits than its factorization.

28448604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 28448604 is about 5333.7232774114. The cubic root of 28448604 is about 305.2720103176.

The spelling of 28448604 in words is "twenty-eight million, four hundred forty-eight thousand, six hundred four".