7895222640 has 120 divisors (see below), whose sum is σ = 26557706448. Its totient is φ = 2101985280.

The previous prime is 7895222611. The next prime is 7895222669. The reversal of 7895222640 is 462225987.

7895222640 is a `hidden beast` number, since 7 + 89 + 522 + 2 + 6 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (7895222611) and next prime (7895222669).

It is a tau number, because it is divible by the number of its divisors (120).

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 (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 452967 + ... + 470073.

Almost surely, 2^7895222640 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 7895222640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13278853224).

7895222640 is an abundant number, since it is smaller than the sum of its proper divisors (18662483808).

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

7895222640 is a wasteful number, since it uses less digits than its factorization.

7895222640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17767 (or 17758 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 7895222640 is about 88855.0653592692. The cubic root of 7895222640 is about 1991.2301544453.

The spelling of 7895222640 in words is "seven billion, eight hundred ninety-five million, two hundred twenty-two thousand, six hundred forty".