28061144 has 8 divisors (see below), whose sum is σ = 52614660. Its totient is φ = 14030568.

The previous prime is 28061123. The next prime is 28061161. The reversal of 28061144 is 44116082.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1753814 + ... + 1753829.

Almost surely, 2^28061144 is an apocalyptic number.

It is an amenable number.

28061144 is a deficient number, since it is larger than the sum of its proper divisors (24553516).

28061144 is a wasteful number, since it uses less digits than its factorization.

28061144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507649 (or 3507645 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 28061144 is about 5297.2770363650. The cubic root of 28061144 is about 303.8797712475.

The spelling of 28061144 in words is "twenty-eight million, sixty-one thousand, one hundred forty-four".