7872185928 has 32 divisors (see below), whose sum is σ = 19683336960. Its totient is φ = 2623679040.

The previous prime is 7872185927. The next prime is 7872185929. The reversal of 7872185928 is 8295812787.

It is an interprime number because it is at equal distance from previous prime (7872185927) and next prime (7872185929).

It is a super-2 number, since 2×7872185928² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7872185927) 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 7 ways as a sum of consecutive naturals, for example, 179098 + ... + 218678.

It is an arithmetic number, because the mean of its divisors is an integer number (615104280).

Almost surely, 2^7872185928 is an apocalyptic number.

It is an amenable number.

7872185928 is an abundant number, since it is smaller than the sum of its proper divisors (11811151032).

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

7872185928 is a wasteful number, since it uses less digits than its factorization.

7872185928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47877 (or 47873 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 57.

The square root of 7872185928 is about 88725.3398302875. The cubic root of 7872185928 is about 1989.2915946889.

The spelling of 7872185928 in words is "seven billion, eight hundred seventy-two million, one hundred eighty-five thousand, nine hundred twenty-eight".