28444088 has 16 divisors (see below), whose sum is σ = 53401680. Its totient is φ = 14203648.

The previous prime is 28444057. The next prime is 28444103. The reversal of 28444088 is 88044482.

It is a super-2 number, since 2×28444088² = 1618132284303488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 6056 + ... + 9672.

It is an arithmetic number, because the mean of its divisors is an integer number (3337605).

Almost surely, 2^28444088 is an apocalyptic number.

It is an amenable number.

28444088 is a deficient number, since it is larger than the sum of its proper divisors (24957592).

28444088 is a wasteful number, since it uses less digits than its factorization.

28444088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4606 (or 4602 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 38.

The square root of 28444088 is about 5333.2999165620. The cubic root of 28444088 is about 305.2558562578.

The spelling of 28444088 in words is "twenty-eight million, four hundred forty-four thousand, eighty-eight".