428871444 has 24 divisors (see below), whose sum is σ = 1059565248. Its totient is φ = 134547840.

The previous prime is 428871431. The next prime is 428871497. The reversal of 428871444 is 444178824.

It is a junction number, because it is equal to n+sod(n) for n = 428871396 and 428871405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050952 + ... + 1051359.

It is an arithmetic number, because the mean of its divisors is an integer number (44148552).

Almost surely, 2^428871444 is an apocalyptic number.

It is an amenable number.

428871444 is an abundant number, since it is smaller than the sum of its proper divisors (630693804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428871444 is a wasteful number, since it uses less digits than its factorization.

428871444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102335 (or 2102333 counting only the distinct ones).

The product of its digits is 229376, while the sum is 42.

The square root of 428871444 is about 20709.2115735969. The cubic root of 428871444 is about 754.1233302096.

The spelling of 428871444 in words is "four hundred twenty-eight million, eight hundred seventy-one thousand, four hundred forty-four".