28162361 has 2 divisors, whose sum is σ = 28162362. Its totient is φ = 28162360.

The previous prime is 28162357. The next prime is 28162391. The reversal of 28162361 is 16326182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28090000 + 72361 = 5300^2 + 269^2 .

It is a cyclic number.

It is not a de Polignac number, because 28162361 - 2² = 28162357 is a prime.

It is not a weakly prime, because it can be changed into another prime (28162331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14081180 + 14081181.

It is an arithmetic number, because the mean of its divisors is an integer number (14081181).

Almost surely, 2^28162361 is an apocalyptic number.

It is an amenable number.

28162361 is a deficient number, since it is larger than the sum of its proper divisors (1).

28162361 is an equidigital number, since it uses as much as digits as its factorization.

28162361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 28162361 is about 5306.8221187449. The cubic root of 28162361 is about 304.2446992471.

The spelling of 28162361 in words is "twenty-eight million, one hundred sixty-two thousand, three hundred sixty-one".