28171411 has 2 divisors, whose sum is σ = 28171412. Its totient is φ = 28171410.

The previous prime is 28171399. The next prime is 28171421. The reversal of 28171411 is 11417182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28171411 - 2¹¹ = 28169363 is a prime.

It is not a weakly prime, because it can be changed into another prime (28171421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14085705 + 14085706.

It is an arithmetic number, because the mean of its divisors is an integer number (14085706).

Almost surely, 2^28171411 is an apocalyptic number.

28171411 is a deficient number, since it is larger than the sum of its proper divisors (1).

28171411 is an equidigital number, since it uses as much as digits as its factorization.

28171411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 25.

The square root of 28171411 is about 5307.6747262808. The cubic root of 28171411 is about 304.2772855259.

Adding to 28171411 its reverse (11417182), we get a palindrome (39588593).

It can be divided in two parts, 28171 and 411, that added together give a palindrome (28582).

The spelling of 28171411 in words is "twenty-eight million, one hundred seventy-one thousand, four hundred eleven".