7828278500 has 48 divisors (see below), whose sum is σ = 19539391872. Its totient is φ = 2683980000.

The previous prime is 7828278487. The next prime is 7828278509. The reversal of 7828278500 is 58728287.

It is a super-2 number, since 2×7828278500² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7828278509) 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, 1114826 + ... + 1121825.

It is an arithmetic number, because the mean of its divisors is an integer number (407070664).

Almost surely, 2^7828278500 is an apocalyptic number.

7828278500 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7828278500 is an abundant number, since it is smaller than the sum of its proper divisors (11711113372).

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

7828278500 is a wasteful number, since it uses less digits than its factorization.

7828278500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236677 (or 2236665 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 47.

The square root of 7828278500 is about 88477.5593017800. The cubic root of 7828278500 is about 1985.5862463992.

The spelling of 7828278500 in words is "seven billion, eight hundred twenty-eight million, two hundred seventy-eight thousand, five hundred".