28442104 has 32 divisors (see below), whose sum is σ = 54684000. Its totient is φ = 13864320.

The previous prime is 28442101. The next prime is 28442123. The reversal of 28442104 is 40124482.

28442104 = T₆₇ + T₆₈ + ... + T₅₅₄.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28442101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81322 + ... + 81670.

It is an arithmetic number, because the mean of its divisors is an integer number (1708875).

Almost surely, 2^28442104 is an apocalyptic number.

It is an amenable number.

28442104 is a deficient number, since it is larger than the sum of its proper divisors (26241896).

28442104 is a wasteful number, since it uses less digits than its factorization.

28442104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 28442104 is about 5333.1139121530. The cubic root of 28442104 is about 305.2487588051.

Adding to 28442104 its reverse (40124482), we get a palindrome (68566586).

The spelling of 28442104 in words is "twenty-eight million, four hundred forty-two thousand, one hundred four".