7820878326 has 16 divisors (see below), whose sum is σ = 15936884784. Its totient is φ = 2557771424.

The previous prime is 7820878321. The next prime is 7820878333. The reversal of 7820878326 is 6238780287.

It is a super-2 number, since 2×7820878326² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7820878321) 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, 12296661 + ... + 12297296.

It is an arithmetic number, because the mean of its divisors is an integer number (996055299).

Almost surely, 2^7820878326 is an apocalyptic number.

7820878326 is an abundant number, since it is smaller than the sum of its proper divisors (8116006458).

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

7820878326 is a wasteful number, since it uses less digits than its factorization.

7820878326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24594015.

The product of its (nonzero) digits is 1806336, while the sum is 51.

The square root of 7820878326 is about 88435.7299172682. The cubic root of 7820878326 is about 1984.9603822669.

The spelling of 7820878326 in words is "seven billion, eight hundred twenty million, eight hundred seventy-eight thousand, three hundred twenty-six".