428448319 has 16 divisors (see below), whose sum is σ = 473768064. Its totient is φ = 384940800.

The previous prime is 428448313. The next prime is 428448337. The reversal of 428448319 is 913844824.

It is not a de Polignac number, because 428448319 - 2³ = 428448311 is a prime.

It is a super-2 number, since 2×428448319² = 367135924107851522, 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 (428448311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347434 + ... + 348664.

It is an arithmetic number, because the mean of its divisors is an integer number (29610504).

Almost surely, 2^428448319 is an apocalyptic number.

428448319 is a deficient number, since it is larger than the sum of its proper divisors (45319745).

428448319 is a wasteful number, since it uses less digits than its factorization.

428448319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938.

The product of its digits is 221184, while the sum is 43.

The square root of 428448319 is about 20698.9931880756. The cubic root of 428448319 is about 753.8752423239.

The spelling of 428448319 in words is "four hundred twenty-eight million, four hundred forty-eight thousand, three hundred nineteen".