428823719 has 8 divisors (see below), whose sum is σ = 431266560. Its totient is φ = 426388536.

The previous prime is 428823709. The next prime is 428823721. The reversal of 428823719 is 917328824.

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 428823719 - 2⁸ = 428823463 is a prime.

It is a super-2 number, since 2×428823719² = 367779563953981922, which contains 22 as substring.

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 428823719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428823709) 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, 137552 + ... + 140634.

It is an arithmetic number, because the mean of its divisors is an integer number (53908320).

Almost surely, 2^428823719 is an apocalyptic number.

428823719 is a deficient number, since it is larger than the sum of its proper divisors (2442841).

428823719 is a wasteful number, since it uses less digits than its factorization.

428823719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3829.

The product of its digits is 193536, while the sum is 44.

The square root of 428823719 is about 20708.0592765232. The cubic root of 428823719 is about 754.0953561150.

The spelling of 428823719 in words is "four hundred twenty-eight million, eight hundred twenty-three thousand, seven hundred nineteen".