28370504 has 16 divisors (see below), whose sum is σ = 54097200. Its totient is φ = 13944592.

The previous prime is 28370491. The next prime is 28370509. The reversal of 28370504 is 40507382.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28370509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29582 + ... + 30525.

It is an arithmetic number, because the mean of its divisors is an integer number (3381075).

Almost surely, 2^28370504 is an apocalyptic number.

It is an amenable number.

28370504 is a deficient number, since it is larger than the sum of its proper divisors (25726696).

28370504 is a wasteful number, since it uses less digits than its factorization.

28370504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60172 (or 60168 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 28370504 is about 5326.3969059769. The cubic root of 28370504 is about 304.9923997031.

Adding to 28370504 its reverse (40507382), we get a palindrome (68877886).

The spelling of 28370504 in words is "twenty-eight million, three hundred seventy thousand, five hundred four".