7820828418 has 16 divisors (see below), whose sum is σ = 16844861376. Its totient is φ = 2406408720.

The previous prime is 7820828399. The next prime is 7820828447. The reversal of 7820828418 is 8148280287.

It is a super-2 number, since 2×7820828418² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50133438 + ... + 50133593.

It is an arithmetic number, because the mean of its divisors is an integer number (1052803836).

Almost surely, 2^7820828418 is an apocalyptic number.

7820828418 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

7820828418 is an abundant number, since it is smaller than the sum of its proper divisors (9024032958).

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

7820828418 is a wasteful number, since it uses less digits than its factorization.

7820828418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100267049.

The product of its (nonzero) digits is 458752, while the sum is 48.

The square root of 7820828418 is about 88435.4477457993. The cubic root of 7820828418 is about 1984.9561599955.

The spelling of 7820828418 in words is "seven billion, eight hundred twenty million, eight hundred twenty-eight thousand, four hundred eighteen".