7896215520 has 144 divisors (see below), whose sum is σ = 27111953232. Its totient is φ = 2092677120.

The previous prime is 7896215507. The next prime is 7896215563. The reversal of 7896215520 is 255126987.

7896215520 is a `hidden beast` number, since 7 + 8 + 96 + 2 + 1 + 552 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 217900 + ... + 251540.

It is an arithmetic number, because the mean of its divisors is an integer number (188277453).

Almost surely, 2^7896215520 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 7896215520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13555976616).

7896215520 is an abundant number, since it is smaller than the sum of its proper divisors (19215737712).

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

7896215520 is a wasteful number, since it uses less digits than its factorization.

7896215520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33825 (or 33814 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 7896215520 is about 88860.6522595913. The cubic root of 7896215520 is about 1991.3136213643.

The spelling of 7896215520 in words is "seven billion, eight hundred ninety-six million, two hundred fifteen thousand, five hundred twenty".