28735747 has 2 divisors, whose sum is σ = 28735748. Its totient is φ = 28735746.

The previous prime is 28735709. The next prime is 28735757. The reversal of 28735747 is 74753782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28735747 - 2¹¹ = 28733699 is a prime.

It is not a weakly prime, because it can be changed into another prime (28735757) 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, 14367873 + 14367874.

It is an arithmetic number, because the mean of its divisors is an integer number (14367874).

Almost surely, 2^28735747 is an apocalyptic number.

28735747 is a deficient number, since it is larger than the sum of its proper divisors (1).

28735747 is an equidigital number, since it uses as much as digits as its factorization.

28735747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329280, while the sum is 43.

The square root of 28735747 is about 5360.5733835104. The cubic root of 28735747 is about 306.2956510040.

It can be divided in two parts, 2873 and 5747, that multiplied together give a triangular number (16511131 = T₅₇₄₆).

The spelling of 28735747 in words is "twenty-eight million, seven hundred thirty-five thousand, seven hundred forty-seven".