814539428 has 18 divisors (see below), whose sum is σ = 1509729858. Its totient is φ = 383201920.

The previous prime is 814539419. The next prime is 814539487. The reversal of 814539428 is 824935418.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 37356544 + 777182884 = 6112^2 + 27878^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 233618 + ... + 237078.

It is an arithmetic number, because the mean of its divisors is an integer number (83873881).

Almost surely, 2^814539428 is an apocalyptic number.

It is an amenable number.

814539428 is a deficient number, since it is larger than the sum of its proper divisors (695190430).

814539428 is an equidigital number, since it uses as much as digits as its factorization.

814539428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6943 (or 3480 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 814539428 is about 28540.1371405254. The cubic root of 814539428 is about 933.9078740865.

The spelling of 814539428 in words is "eight hundred fourteen million, five hundred thirty-nine thousand, four hundred twenty-eight".