28440118 has 16 divisors (see below), whose sum is σ = 49675680. Its totient is φ = 11958336.

The previous prime is 28440103. The next prime is 28440127. The reversal of 28440118 is 81104482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18423 + ... + 19906.

It is an arithmetic number, because the mean of its divisors is an integer number (3104730).

Almost surely, 2^28440118 is an apocalyptic number.

28440118 is a deficient number, since it is larger than the sum of its proper divisors (21235562).

28440118 is a wasteful number, since it uses less digits than its factorization.

28440118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38391.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 28440118 is about 5332.9277137422. The cubic root of 28440118 is about 305.2416538673.

The spelling of 28440118 in words is "twenty-eight million, four hundred forty thousand, one hundred eighteen".