7865863628 has 12 divisors (see below), whose sum is σ = 15731727312. Its totient is φ = 3371084400.

The previous prime is 7865863627. The next prime is 7865863651. The reversal of 7865863628 is 8263685687.

7865863628 is an admirable number.

It is a super-2 number, since 2×7865863628² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7865863627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140461823 + ... + 140461878.

It is an arithmetic number, because the mean of its divisors is an integer number (1310977276).

Almost surely, 2^7865863628 is an apocalyptic number.

It is an amenable number.

7865863628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7865863628 is a wasteful number, since it uses less digits than its factorization.

7865863628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280923712 (or 280923710 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 59.

The square root of 7865863628 is about 88689.7041826164. The cubic root of 7865863628 is about 1988.7589062767.

The spelling of 7865863628 in words is "seven billion, eight hundred sixty-five million, eight hundred sixty-three thousand, six hundred twenty-eight".