841428 has 90 divisors (see below), whose sum is σ = 2607066. Its totient is φ = 235872.

The previous prime is 841427. The next prime is 841447. The reversal of 841428 is 824148.

It can be written as a sum of positive squares in only one way, i.e., 777924 + 63504 = 882^2 + 252^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 841428.

It is not an unprimeable number, because it can be changed into a prime (841427) by changing a digit.

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 29 ways as a sum of consecutive naturals, for example, 15850 + ... + 15902.

2⁸⁴¹⁴²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 841428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1303533).

841428 is an abundant number, since it is smaller than the sum of its proper divisors (1765638).

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

841428 is a wasteful number, since it uses less digits than its factorization.

841428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 65 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 841428 is about 917.2938460493. The cubic root of 841428 is about 94.4073165353.

The spelling of 841428 in words is "eight hundred forty-one thousand, four hundred twenty-eight".