28454149 has 2 divisors, whose sum is σ = 28454150. Its totient is φ = 28454148.

The previous prime is 28454137. The next prime is 28454161. The reversal of 28454149 is 94145482.

It is a balanced prime because it is at equal distance from previous prime (28454137) and next prime (28454161).

It can be written as a sum of positive squares in only one way, i.e., 14630625 + 13823524 = 3825^2 + 3718^2 .

It is a cyclic number.

It is not a de Polignac number, because 28454149 - 2⁷ = 28454021 is a prime.

It is equal to p_1767925 and since 28454149 and 1767925 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28454119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14227074 + 14227075.

It is an arithmetic number, because the mean of its divisors is an integer number (14227075).

Almost surely, 2^28454149 is an apocalyptic number.

It is an amenable number.

28454149 is a deficient number, since it is larger than the sum of its proper divisors (1).

28454149 is an equidigital number, since it uses as much as digits as its factorization.

28454149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 37.

The square root of 28454149 is about 5334.2430578293. The cubic root of 28454149 is about 305.2918428470.

The spelling of 28454149 in words is "twenty-eight million, four hundred fifty-four thousand, one hundred forty-nine".