7828734641 has 16 divisors (see below), whose sum is σ = 10054297344. Its totient is φ = 5924850624.

The previous prime is 7828734631. The next prime is 7828734647. The reversal of 7828734641 is 1464378287.

It is not a de Polignac number, because 7828734641 - 2²⁶ = 7761625777 is a prime.

It is a super-2 number, since 2×7828734641² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7828734641.

It is not an unprimeable number, because it can be changed into a prime (7828734647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1868126 + ... + 1872311.

It is an arithmetic number, because the mean of its divisors is an integer number (628393584).

Almost surely, 2^7828734641 is an apocalyptic number.

It is an amenable number.

7828734641 is a deficient number, since it is larger than the sum of its proper divisors (2225562703).

7828734641 is a wasteful number, since it uses less digits than its factorization.

7828734641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740480.

The product of its digits is 1806336, while the sum is 50.

The square root of 7828734641 is about 88480.1369856535. The cubic root of 7828734641 is about 1985.6248112725.

The spelling of 7828734641 in words is "seven billion, eight hundred twenty-eight million, seven hundred thirty-four thousand, six hundred forty-one".