28929751 has 2 divisors, whose sum is σ = 28929752. Its totient is φ = 28929750.

The previous prime is 28929689. The next prime is 28929757. The reversal of 28929751 is 15792982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28929751 - 2⁷ = 28929623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28929698 and 28929707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28929757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14464875 + 14464876.

It is an arithmetic number, because the mean of its divisors is an integer number (14464876).

Almost surely, 2^28929751 is an apocalyptic number.

28929751 is a deficient number, since it is larger than the sum of its proper divisors (1).

28929751 is an equidigital number, since it uses as much as digits as its factorization.

28929751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 43.

The square root of 28929751 is about 5378.6383964717. The cubic root of 28929751 is about 306.9834047624.

The spelling of 28929751 in words is "twenty-eight million, nine hundred twenty-nine thousand, seven hundred fifty-one".