428280319 has 4 divisors (see below), whose sum is σ = 428769544. Its totient is φ = 427791096.

The previous prime is 428280313. The next prime is 428280331. The reversal of 428280319 is 913082824.

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 428280319 - 2⁵ = 428280287 is a prime.

It is a super-2 number, since 2×428280319² = 366848063285483522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428280313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243297 + ... + 245050.

It is an arithmetic number, because the mean of its divisors is an integer number (107192386).

Almost surely, 2^428280319 is an apocalyptic number.

428280319 is a deficient number, since it is larger than the sum of its proper divisors (489225).

428280319 is an equidigital number, since it uses as much as digits as its factorization.

428280319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489224.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 428280319 is about 20694.9346217861. The cubic root of 428280319 is about 753.7766947726.

The spelling of 428280319 in words is "four hundred twenty-eight million, two hundred eighty thousand, three hundred nineteen".