428049171 has 48 divisors (see below), whose sum is σ = 735031680. Its totient is φ = 244114560.

The previous prime is 428049161. The next prime is 428049173. The reversal of 428049171 is 171940824.

It is not a de Polignac number, because 428049171 - 2⁹ = 428048659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428049173) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83340 + ... + 88326.

It is an arithmetic number, because the mean of its divisors is an integer number (15313160).

Almost surely, 2^428049171 is an apocalyptic number.

428049171 is a deficient number, since it is larger than the sum of its proper divisors (306982509).

428049171 is a wasteful number, since it uses less digits than its factorization.

428049171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041 (or 5018 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 428049171 is about 20689.3492164447. The cubic root of 428049171 is about 753.6410629426.

Adding to 428049171 its reverse (171940824), we get a palindrome (599989995).

The spelling of 428049171 in words is "four hundred twenty-eight million, forty-nine thousand, one hundred seventy-one".