28754757 has 10 divisors (see below), whose sum is σ = 42954758. Its totient is φ = 19169784.

The previous prime is 28754731. The next prime is 28754767. The reversal of 28754757 is 75745782.

It can be written as a sum of positive squares in only one way, i.e., 18198756 + 10556001 = 4266^2 + 3249^2 .

It is not a de Polignac number, because 28754757 - 2⁷ = 28754629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28754717) 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 in 9 ways as a sum of consecutive naturals, for example, 177418 + ... + 177579.

Almost surely, 2^28754757 is an apocalyptic number.

28754757 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28754757 is a deficient number, since it is larger than the sum of its proper divisors (14200001).

28754757 is an equidigital number, since it uses as much as digits as its factorization.

28754757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355009 (or 355000 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 28754757 is about 5362.3462215713. The cubic root of 28754757 is about 306.3631789371.

Subtracting 28754757 from its reverse (75745782), we obtain a square (46991025 = 6855²).

The spelling of 28754757 in words is "twenty-eight million, seven hundred fifty-four thousand, seven hundred fifty-seven".