428347327 has 4 divisors (see below), whose sum is σ = 428415840. Its totient is φ = 428278816.

The previous prime is 428347291. The next prime is 428347333. The reversal of 428347327 is 723743824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428347327 - 2¹¹ = 428345279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428347327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428347357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23818 + ... + 37735.

It is an arithmetic number, because the mean of its divisors is an integer number (107103960).

Almost surely, 2^428347327 is an apocalyptic number.

428347327 is a deficient number, since it is larger than the sum of its proper divisors (68513).

428347327 is an equidigital number, since it uses as much as digits as its factorization.

428347327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68512.

The product of its digits is 225792, while the sum is 40.

The square root of 428347327 is about 20696.5535053545. The cubic root of 428347327 is about 753.8160042564.

The spelling of 428347327 in words is "four hundred twenty-eight million, three hundred forty-seven thousand, three hundred twenty-seven".