28143741 has 8 divisors (see below), whose sum is σ = 38323584. Its totient is φ = 18363200.

The previous prime is 28143733. The next prime is 28143749. The reversal of 28143741 is 14734182.

It is an interprime number because it is at equal distance from previous prime (28143733) and next prime (28143749).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28143741 - 2³ = 28143733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28143699 and 28143708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28143749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99660 + ... + 99941.

It is an arithmetic number, because the mean of its divisors is an integer number (4790448).

Almost surely, 2^28143741 is an apocalyptic number.

It is an amenable number.

28143741 is a deficient number, since it is larger than the sum of its proper divisors (10179843).

28143741 is a wasteful number, since it uses less digits than its factorization.

28143741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199651.

The product of its digits is 5376, while the sum is 30.

The square root of 28143741 is about 5305.0674830769. The cubic root of 28143741 is about 304.1776323646.

It can be divided in two parts, 2814 and 3741, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 28143741 in words is "twenty-eight million, one hundred forty-three thousand, seven hundred forty-one".