423528445 has 8 divisors (see below), whose sum is σ = 509598936. Its totient is φ = 337912896.

The previous prime is 423528439. The next prime is 423528467. The reversal of 423528445 is 544825324.

It can be written as a sum of positive squares in 4 ways, for example, as 140683321 + 282845124 = 11861^2 + 16818^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423528445 - 2⁹ = 423527933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111682 + ... + 115411.

It is an arithmetic number, because the mean of its divisors is an integer number (63699867).

Almost surely, 2^423528445 is an apocalyptic number.

It is an amenable number.

423528445 is a deficient number, since it is larger than the sum of its proper divisors (86070491).

423528445 is a wasteful number, since it uses less digits than its factorization.

423528445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227471.

The product of its digits is 153600, while the sum is 37.

The square root of 423528445 is about 20579.8067289273. The cubic root of 423528445 is about 750.9785419781.

The spelling of 423528445 in words is "four hundred twenty-three million, five hundred twenty-eight thousand, four hundred forty-five".