28348644 has 24 divisors (see below), whose sum is σ = 66437280. Its totient is φ = 9408064.

The previous prime is 28348643. The next prime is 28348651. The reversal of 28348644 is 44684382.

It is not an unprimeable number, because it can be changed into a prime (28348643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2274 + ... + 7865.

It is an arithmetic number, because the mean of its divisors is an integer number (2768220).

Almost surely, 2^28348644 is an apocalyptic number.

It is an amenable number.

28348644 is an abundant number, since it is smaller than the sum of its proper divisors (38088636).

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

28348644 is a wasteful number, since it uses less digits than its factorization.

28348644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10379 (or 10377 counting only the distinct ones).

The product of its digits is 147456, while the sum is 39.

The square root of 28348644 is about 5324.3444666926. The cubic root of 28348644 is about 304.9140454733.

The spelling of 28348644 in words is "twenty-eight million, three hundred forty-eight thousand, six hundred forty-four".