28445104 has 20 divisors (see below), whose sum is σ = 56891200. Its totient is φ = 13763520.

The previous prime is 28445101. The next prime is 28445111. The reversal of 28445104 is 40154482.

28445104 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28445101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28179 + ... + 29170.

It is an arithmetic number, because the mean of its divisors is an integer number (2844560).

Almost surely, 2^28445104 is an apocalyptic number.

It is an amenable number.

28445104 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28445104 is a wasteful number, since it uses less digits than its factorization.

28445104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57388 (or 57382 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 28445104 is about 5333.3951663082. The cubic root of 28445104 is about 305.2594907126.

Adding to 28445104 its reverse (40154482), we get a palindrome (68599586).

The spelling of 28445104 in words is "twenty-eight million, four hundred forty-five thousand, one hundred four".