28051739 has 2 divisors, whose sum is σ = 28051740. Its totient is φ = 28051738.

The previous prime is 28051711. The next prime is 28051747. The reversal of 28051739 is 93715082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28051739 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28051699 and 28051708.

It is not a weakly prime, because it can be changed into another prime (28051799) 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, 14025869 + 14025870.

It is an arithmetic number, because the mean of its divisors is an integer number (14025870).

Almost surely, 2^28051739 is an apocalyptic number.

28051739 is a deficient number, since it is larger than the sum of its proper divisors (1).

28051739 is an equidigital number, since it uses as much as digits as its factorization.

28051739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 28051739 is about 5296.3892417382. The cubic root of 28051739 is about 303.8458179085.

The spelling of 28051739 in words is "twenty-eight million, fifty-one thousand, seven hundred thirty-nine".