28141137 has 24 divisors (see below), whose sum is σ = 43307784. Its totient is φ = 17547264.

The previous prime is 28141133. The next prime is 28141153. The reversal of 28141137 is 73114182.

It can be written as a sum of positive squares in 4 ways, for example, as 3549456 + 24591681 = 1884^2 + 4959^2 .

It is not a de Polignac number, because 28141137 - 2² = 28141133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28141137.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28141133) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 29053 + ... + 30005.

It is an arithmetic number, because the mean of its divisors is an integer number (1804491).

Almost surely, 2^28141137 is an apocalyptic number.

It is an amenable number.

28141137 is a deficient number, since it is larger than the sum of its proper divisors (15166647).

28141137 is a wasteful number, since it uses less digits than its factorization.

28141137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 1166 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 28141137 is about 5304.8220516809. The cubic root of 28141137 is about 304.1682507288.

The spelling of 28141137 in words is "twenty-eight million, one hundred forty-one thousand, one hundred thirty-seven".