7820434078 has 32 divisors (see below), whose sum is σ = 12506677344. Its totient is φ = 3654822912.

The previous prime is 7820434073. The next prime is 7820434091. The reversal of 7820434078 is 8704340287.

It is a super-2 number, since 2×7820434078² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7820434073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3266850 + ... + 3269242.

It is an arithmetic number, because the mean of its divisors is an integer number (390833667).

Almost surely, 2^7820434078 is an apocalyptic number.

7820434078 is a deficient number, since it is larger than the sum of its proper divisors (4686243266).

7820434078 is a wasteful number, since it uses less digits than its factorization.

7820434078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036.

The product of its (nonzero) digits is 301056, while the sum is 43.

The square root of 7820434078 is about 88433.2181818574. The cubic root of 7820434078 is about 1984.9227977681.

The spelling of 7820434078 in words is "seven billion, eight hundred twenty million, four hundred thirty-four thousand, seventy-eight".