28751747 has 2 divisors, whose sum is σ = 28751748. Its totient is φ = 28751746.

The previous prime is 28751741. The next prime is 28751761. The reversal of 28751747 is 74715782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28751747 - 2⁶ = 28751683 is a prime.

It is not a weakly prime, because it can be changed into another prime (28751741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14375873 + 14375874.

It is an arithmetic number, because the mean of its divisors is an integer number (14375874).

Almost surely, 2^28751747 is an apocalyptic number.

28751747 is a deficient number, since it is larger than the sum of its proper divisors (1).

28751747 is an equidigital number, since it uses as much as digits as its factorization.

28751747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109760, while the sum is 41.

The square root of 28751747 is about 5362.0655534971. The cubic root of 28751747 is about 306.3524887019.

The spelling of 28751747 in words is "twenty-eight million, seven hundred fifty-one thousand, seven hundred forty-seven".