28141141 has 6 divisors (see below), whose sum is σ = 32735670. Its totient is φ = 24120936.

The previous prime is 28141133. The next prime is 28141153. The reversal of 28141141 is 14114182.

It can be written as a sum of positive squares in only one way, i.e., 24354225 + 3786916 = 4935^2 + 1946^2 .

It is not a de Polignac number, because 28141141 - 2³ = 28141133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28141241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 287106 + ... + 287203.

It is an arithmetic number, because the mean of its divisors is an integer number (5455945).

Almost surely, 2^28141141 is an apocalyptic number.

It is an amenable number.

28141141 is a deficient number, since it is larger than the sum of its proper divisors (4594529).

28141141 is an equidigital number, since it uses as much as digits as its factorization.

28141141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574323 (or 574316 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

The square root of 28141141 is about 5304.8224286964. The cubic root of 28141141 is about 304.1682651404.

It can be divided in two parts, 28141 and 141, that added together give a palindrome (28282).

The spelling of 28141141 in words is "twenty-eight million, one hundred forty-one thousand, one hundred forty-one".