28668151 has 2 divisors, whose sum is σ = 28668152. Its totient is φ = 28668150.

The previous prime is 28668113. The next prime is 28668163. The reversal of 28668151 is 15186682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28668151 - 2⁷ = 28668023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28668151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28668181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14334075 + 14334076.

It is an arithmetic number, because the mean of its divisors is an integer number (14334076).

Almost surely, 2^28668151 is an apocalyptic number.

28668151 is the 2395-th centered decagonal number.

28668151 is a deficient number, since it is larger than the sum of its proper divisors (1).

28668151 is an equidigital number, since it uses as much as digits as its factorization.

28668151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 37.

The square root of 28668151 is about 5354.2647487774. The cubic root of 28668151 is about 306.0552928120.

The spelling of 28668151 in words is "twenty-eight million, six hundred sixty-eight thousand, one hundred fifty-one".