28448620 has 24 divisors (see below), whose sum is σ = 60757200. Its totient is φ = 11186112.

The previous prime is 28448603. The next prime is 28448627. The reversal of 28448620 is 2684482.

It is not an unprimeable number, because it can be changed into a prime (28448627) 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 7 ways as a sum of consecutive naturals, for example, 10875 + ... + 13234.

It is an arithmetic number, because the mean of its divisors is an integer number (2531550).

Almost surely, 2^28448620 is an apocalyptic number.

28448620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28448620 is an abundant number, since it is smaller than the sum of its proper divisors (32308580).

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

28448620 is a wasteful number, since it uses less digits than its factorization.

28448620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24177 (or 24175 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 28448620 is about 5333.7247773015. The cubic root of 28448620 is about 305.2720675477.

The spelling of 28448620 in words is "twenty-eight million, four hundred forty-eight thousand, six hundred twenty".