28374739 has 2 divisors, whose sum is σ = 28374740. Its totient is φ = 28374738.

The previous prime is 28374737. The next prime is 28374761. The reversal of 28374739 is 93747382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28374739 - 2¹ = 28374737 is a prime.

Together with 28374737, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 28374695 and 28374704.

It is not a weakly prime, because it can be changed into another prime (28374737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14187369 + 14187370.

It is an arithmetic number, because the mean of its divisors is an integer number (14187370).

Almost surely, 2^28374739 is an apocalyptic number.

28374739 is a deficient number, since it is larger than the sum of its proper divisors (1).

28374739 is an equidigital number, since it uses as much as digits as its factorization.

28374739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 43.

The square root of 28374739 is about 5326.7944394354. The cubic root of 28374739 is about 305.0075748365.

The spelling of 28374739 in words is "twenty-eight million, three hundred seventy-four thousand, seven hundred thirty-nine".