28912151 has 2 divisors, whose sum is σ = 28912152. Its totient is φ = 28912150.

The previous prime is 28912099. The next prime is 28912157. The reversal of 28912151 is 15121982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28912151 - 2¹⁸ = 28650007 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28912157) 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 as a sum of consecutive naturals, namely, 14456075 + 14456076.

It is an arithmetic number, because the mean of its divisors is an integer number (14456076).

Almost surely, 2^28912151 is an apocalyptic number.

28912151 is a deficient number, since it is larger than the sum of its proper divisors (1).

28912151 is an equidigital number, since it uses as much as digits as its factorization.

28912151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 29.

The square root of 28912151 is about 5377.0020457500. The cubic root of 28912151 is about 306.9211389430.

The spelling of 28912151 in words is "twenty-eight million, nine hundred twelve thousand, one hundred fifty-one".