7828438854 has 8 divisors (see below), whose sum is σ = 15656877720. Its totient is φ = 2609479616.

The previous prime is 7828438847. The next prime is 7828438859. The reversal of 7828438854 is 4588348287.

It is a sphenic number, since it is the product of 3 distinct primes.

7828438854 is an admirable number.

It is a super-2 number, since 2×7828438854² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7828438794 and 7828438803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7828438859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652369899 + ... + 652369910.

It is an arithmetic number, because the mean of its divisors is an integer number (1957109715).

Almost surely, 2^7828438854 is an apocalyptic number.

7828438854 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7828438854 is a wasteful number, since it uses less digits than its factorization.

7828438854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304739814.

The product of its digits is 13762560, while the sum is 57.

The square root of 7828438854 is about 88478.4654817205. The cubic root of 7828438854 is about 1985.5998038509.

The spelling of 7828438854 in words is "seven billion, eight hundred twenty-eight million, four hundred thirty-eight thousand, eight hundred fifty-four".