28037144 has 32 divisors (see below), whose sum is σ = 54743040. Its totient is φ = 13447200.

The previous prime is 28037143. The next prime is 28037147. The reversal of 28037144 is 44173082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28037143) 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 7 ways as a sum of consecutive naturals, for example, 32057 + ... + 32919.

It is an arithmetic number, because the mean of its divisors is an integer number (1710720).

Almost surely, 2^28037144 is an apocalyptic number.

It is an amenable number.

28037144 is a deficient number, since it is larger than the sum of its proper divisors (26705896).

28037144 is a wasteful number, since it uses less digits than its factorization.

28037144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031 (or 1027 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 28037144 is about 5295.0112370041. The cubic root of 28037144 is about 303.7931129285.

The spelling of 28037144 in words is "twenty-eight million, thirty-seven thousand, one hundred forty-four".