7894722528 has 576 divisors, whose sum is σ = 30248225280. Its totient is φ = 1891123200.

The previous prime is 7894722491. The next prime is 7894722529. The reversal of 7894722528 is 8252274987.

7894722528 is a `hidden beast` number, since 7 + 8 + 94 + 7 + 22 + 528 = 666.

It is a super-2 number, since 2×7894722528² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7894722529) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17274876 + ... + 17275332.

It is an arithmetic number, because the mean of its divisors is an integer number (52514280).

Almost surely, 2^7894722528 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 7894722528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15124112640).

7894722528 is an abundant number, since it is smaller than the sum of its proper divisors (22353502752).

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

7894722528 is a wasteful number, since it uses less digits than its factorization.

7894722528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 540 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 7894722528 is about 88852.2511138575. The cubic root of 7894722528 is about 1991.1881096474.

It can be divided in two parts, 78947 and 22528, that added together give a triangular number (101475 = T₄₅₀).

The spelling of 7894722528 in words is "seven billion, eight hundred ninety-four million, seven hundred twenty-two thousand, five hundred twenty-eight".