7828438443 has 32 divisors (see below), whose sum is σ = 12938849280. Its totient is φ = 4107555840.

The previous prime is 7828438433. The next prime is 7828438469. The reversal of 7828438443 is 3448348287.

It is not a de Polignac number, because 7828438443 - 2⁵ = 7828438411 is a prime.

It is a super-2 number, since 2×7828438443² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (7828438433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252783 + ... + 282056.

It is an arithmetic number, because the mean of its divisors is an integer number (404339040).

Almost surely, 2^7828438443 is an apocalyptic number.

7828438443 is a deficient number, since it is larger than the sum of its proper divisors (5110410837).

7828438443 is a wasteful number, since it uses less digits than its factorization.

7828438443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534907.

The product of its digits is 4128768, while the sum is 51.

The square root of 7828438443 is about 88478.4631591214. The cubic root of 7828438443 is about 1985.5997691024.

The spelling of 7828438443 in words is "seven billion, eight hundred twenty-eight million, four hundred thirty-eight thousand, four hundred forty-three".