28514874757 has 8 divisors (see below), whose sum is σ = 28881447896. Its totient is φ = 28149783552.

The previous prime is 28514874733. The next prime is 28514874769. The reversal of 28514874757 is 75747841582.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4963061601 + 23551813156 = 70449^2 + 153466^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28514874757 - 2³¹ = 26367391109 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 (28514874257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331728 + ... + 408745.

It is an arithmetic number, because the mean of its divisors is an integer number (3610180987).

Almost surely, 2^28514874757 is an apocalyptic number.

It is an amenable number.

28514874757 is a deficient number, since it is larger than the sum of its proper divisors (366573139).

28514874757 is an equidigital number, since it uses as much as digits as its factorization.

28514874757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740967.

The product of its digits is 17561600, while the sum is 58.

The spelling of 28514874757 in words is "twenty-eight billion, five hundred fourteen million, eight hundred seventy-four thousand, seven hundred fifty-seven".