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2468978660 = 225612023753
BaseRepresentation
bin1001001100101001…
…1001111111100100
320101001211010000002
42103022121333210
520024024304120
61044554440432
7115116654341
oct22312317744
96331733002
102468978660
111057746235
1258aa33118
1330468a625
14195c977c8
15e6b4e375
hex93299fe4

2468978660 has 24 divisors (see below), whose sum is σ = 5269855416. Its totient is φ = 971400960.

The previous prime is 2468978653. The next prime is 2468978671. The reversal of 2468978660 is 668798642.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6635776 + 2462342884 = 2576^2 + 49622^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2468978596 and 2468978605.

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 7 ways as a sum of consecutive naturals, for example, 1010657 + ... + 1013096.

It is an arithmetic number, because the mean of its divisors is an integer number (219577309).

Almost surely, 22468978660 is an apocalyptic number.

2468978660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2468978660 is an abundant number, since it is smaller than the sum of its proper divisors (2800876756).

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

2468978660 is a wasteful number, since it uses less digits than its factorization.

2468978660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023823 (or 2023821 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 56.

The square root of 2468978660 is about 49688.8182592422. The cubic root of 2468978660 is about 1351.5717696853.

The spelling of 2468978660 in words is "two billion, four hundred sixty-eight million, nine hundred seventy-eight thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 2023753 4047506 8095012 10118765 20237530 40475060 123448933 246897866 493795732 617244665 1234489330 2468978660