428222329 has 8 divisors (see below), whose sum is σ = 431038400. Its totient is φ = 425413296.

The previous prime is 428222321. The next prime is 428222357. The reversal of 428222329 is 923222824.

It is a happy number.

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 428222329 - 2³ = 428222321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428222294 and 428222303.

It is not an unprimeable number, because it can be changed into a prime (428222321) 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, 174499 + ... + 176935.

It is an arithmetic number, because the mean of its divisors is an integer number (53879800).

Almost surely, 2^428222329 is an apocalyptic number.

It is an amenable number.

428222329 is a deficient number, since it is larger than the sum of its proper divisors (2816071).

428222329 is a wasteful number, since it uses less digits than its factorization.

428222329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519.

The product of its digits is 27648, while the sum is 34.

The square root of 428222329 is about 20693.5335068712. The cubic root of 428222329 is about 753.7426722865.

The spelling of 428222329 in words is "four hundred twenty-eight million, two hundred twenty-two thousand, three hundred twenty-nine".