4185428 has 12 divisors (see below), whose sum is σ = 7888020. Its totient is φ = 1931712.

The previous prime is 4185413. The next prime is 4185431. The reversal of 4185428 is 8245814.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 1567504 = 1618^2 + 1252^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4185394 and 4185403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40193 + ... + 40296.

It is an arithmetic number, because the mean of its divisors is an integer number (657335).

Almost surely, 2^4185428 is an apocalyptic number.

It is an amenable number.

4185428 is a deficient number, since it is larger than the sum of its proper divisors (3702592).

4185428 is a wasteful number, since it uses less digits than its factorization.

4185428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80506 (or 80504 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 4185428 is about 2045.8318601488. The cubic root of 4185428 is about 161.1560540843.

The spelling of 4185428 in words is "four million, one hundred eighty-five thousand, four hundred twenty-eight".