428485177 has 4 divisors (see below), whose sum is σ = 433909120. Its totient is φ = 423061236.

The previous prime is 428485163. The next prime is 428485201. The reversal of 428485177 is 771584824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428485177 - 2¹¹ = 428483129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428485157) 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 3 ways as a sum of consecutive naturals, for example, 2711853 + ... + 2712010.

It is an arithmetic number, because the mean of its divisors is an integer number (108477280).

Almost surely, 2^428485177 is an apocalyptic number.

It is an amenable number.

428485177 is a deficient number, since it is larger than the sum of its proper divisors (5423943).

428485177 is an equidigital number, since it uses as much as digits as its factorization.

428485177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5423942.

The product of its digits is 501760, while the sum is 46.

The square root of 428485177 is about 20699.8835020876. The cubic root of 428485177 is about 753.8968595068.

It can be divided in two parts, 428 and 485177, that added together give a triangular number (485605 = T₉₈₅).

The spelling of 428485177 in words is "four hundred twenty-eight million, four hundred eighty-five thousand, one hundred seventy-seven".