428086756877 has 24 divisors (see below), whose sum is σ = 471852627048. Its totient is φ = 388124006400.

The previous prime is 428086756871. The next prime is 428086756891. The reversal of 428086756877 is 778657680824.

It can be written as a sum of positive squares in 12 ways, for example, as 130735757476 + 297350999401 = 361574^2 + 545299^2 .

It is not a de Polignac number, because 428086756877 - 2¹⁶ = 428086691341 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 (428086756871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2901227 + ... + 3045207.

It is an arithmetic number, because the mean of its divisors is an integer number (19660526127).

Almost surely, 2^428086756877 is an apocalyptic number.

It is an amenable number.

428086756877 is a deficient number, since it is larger than the sum of its proper divisors (43765870171).

428086756877 is a wasteful number, since it uses less digits than its factorization.

428086756877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144321 (or 144308 counting only the distinct ones).

The product of its (nonzero) digits is 252887040, while the sum is 68.

The spelling of 428086756877 in words is "four hundred twenty-eight billion, eighty-six million, seven hundred fifty-six thousand, eight hundred seventy-seven".