7822359540 has 84 divisors (see below), whose sum is σ = 24629211684. Its totient is φ = 2085958656.

The previous prime is 7822359539. The next prime is 7822359553. The reversal of 7822359540 is 459532287.

7822359540 is a `hidden beast` number, since 7 + 82 + 23 + 5 + 9 + 540 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2253021156 + 5569338384 = 47466^2 + 74628^2 .

It is a super-2 number, since 2×7822359540² (a number of 21 digits) contains 22 as substring.

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 polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 253677 + ... + 282836.

It is an arithmetic number, because the mean of its divisors is an integer number (293204901).

Almost surely, 2^7822359540 is an apocalyptic number.

It is an amenable number.

7822359540 is an abundant number, since it is smaller than the sum of its proper divisors (16806852144).

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

7822359540 is a wasteful number, since it uses less digits than its factorization.

7822359540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536540 (or 536523 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 7822359540 is about 88444.1040431752. The cubic root of 7822359540 is about 1985.0856864161.

The spelling of 7822359540 in words is "seven billion, eight hundred twenty-two million, three hundred fifty-nine thousand, five hundred forty".