7824878480 has 20 divisors (see below), whose sum is σ = 18192842652. Its totient is φ = 3129951360.

The previous prime is 7824878447. The next prime is 7824878497. The reversal of 7824878480 is 848784287.

It can be written as a sum of positive squares in 2 ways, for example, as 1860714496 + 5964163984 = 43136^2 + 77228^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×7824878480² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48905411 + ... + 48905570.

Almost surely, 2^7824878480 is an apocalyptic number.

It is an amenable number.

7824878480 is an abundant number, since it is smaller than the sum of its proper divisors (10367964172).

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

7824878480 is a wasteful number, since it uses less digits than its factorization.

7824878480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97810994 (or 97810988 counting only the distinct ones).

The product of its (nonzero) digits is 6422528, while the sum is 56.

The square root of 7824878480 is about 88458.3431904532. The cubic root of 7824878480 is about 1985.2987412742.

The spelling of 7824878480 in words is "seven billion, eight hundred twenty-four million, eight hundred seventy-eight thousand, four hundred eighty".