814428 has 24 divisors (see below), whose sum is σ = 2111760. Its totient is φ = 271440.

The previous prime is 814423. The next prime is 814447. The reversal of 814428 is 824418.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814423) 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 7 ways as a sum of consecutive naturals, for example, 3663 + ... + 3878.

It is an arithmetic number, because the mean of its divisors is an integer number (87990).

2⁸¹⁴⁴²⁸ is an apocalyptic number.

It is an amenable number.

814428 is an abundant number, since it is smaller than the sum of its proper divisors (1297332).

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

814428 is a wasteful number, since it uses less digits than its factorization.

814428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7554 (or 7546 counting only the distinct ones).

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

The square root of 814428 is about 902.4566471582. The cubic root of 814428 is about 93.3865286325.

The spelling of 814428 in words is "eight hundred fourteen thousand, four hundred twenty-eight".