428321001 has 8 divisors (see below), whose sum is σ = 604688544. Its totient is φ = 268750400.

The previous prime is 428320999. The next prime is 428321027. The reversal of 428321001 is 100123824.

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 428321001 - 2¹ = 428320999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428321051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4199175 + ... + 4199276.

It is an arithmetic number, because the mean of its divisors is an integer number (75586068).

Almost surely, 2^428321001 is an apocalyptic number.

It is an amenable number.

428321001 is a deficient number, since it is larger than the sum of its proper divisors (176367543).

428321001 is a wasteful number, since it uses less digits than its factorization.

428321001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8398471.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 428321001 is about 20695.9174959701. The cubic root of 428321001 is about 753.8005608958.

Adding to 428321001 its reverse (100123824), we get a palindrome (528444825).

The spelling of 428321001 in words is "four hundred twenty-eight million, three hundred twenty-one thousand, one".