28155341 has 2 divisors, whose sum is σ = 28155342. Its totient is φ = 28155340.

The previous prime is 28155329. The next prime is 28155367. The reversal of 28155341 is 14355182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26739241 + 1416100 = 5171^2 + 1190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28155341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28155241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14077670 + 14077671.

It is an arithmetic number, because the mean of its divisors is an integer number (14077671).

Almost surely, 2^28155341 is an apocalyptic number.

It is an amenable number.

28155341 is a deficient number, since it is larger than the sum of its proper divisors (1).

28155341 is an equidigital number, since it uses as much as digits as its factorization.

28155341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 29.

The square root of 28155341 is about 5306.1606647368. The cubic root of 28155341 is about 304.2194175685.

The spelling of 28155341 in words is "twenty-eight million, one hundred fifty-five thousand, three hundred forty-one".