7656028812 has 72 divisors (see below), whose sum is σ = 20544451200. Its totient is φ = 2395642368.

The previous prime is 7656028781. The next prime is 7656028817. The reversal of 7656028812 is 2188206567.

7656028812 is a `hidden beast` number, since 7 + 6 + 560 + 2 + 8 + 81 + 2 = 666.

It is a super-2 number, since 2×7656028812² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7656028817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221989 + ... + 254147.

It is an arithmetic number, because the mean of its divisors is an integer number (285339600).

Almost surely, 2^7656028812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7656028812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10272225600).

7656028812 is an abundant number, since it is smaller than the sum of its proper divisors (12888422388).

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

7656028812 is a wasteful number, since it uses less digits than its factorization.

7656028812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32575 (or 32570 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 7656028812 is about 87498.7360594426. The cubic root of 7656028812 is about 1970.9148105923.

The spelling of 7656028812 in words is "seven billion, six hundred fifty-six million, twenty-eight thousand, eight hundred twelve".