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2420104865 = 51178941057
BaseRepresentation
bin1001000000111111…
…1101111010100001
320020122212001202112
42100033331322201
514424021323430
61040051125105
7113654360213
oct22017757241
96218761675
102420104865
1110320a4672
125765a3795
132c7507a19
1418d5b45b3
15e26e8195
hex903fdea1

2420104865 has 8 divisors (see below), whose sum is σ = 2904442920. Its totient is φ = 1935872512.

The previous prime is 2420104861. The next prime is 2420104927. The reversal of 2420104865 is 5684010242.

It can be written as a sum of positive squares in 4 ways, for example, as 116488849 + 2303616016 = 10793^2 + 47996^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2420104865 - 22 = 2420104861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2420104861) by changing a digit.

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, 38417 + ... + 79473.

It is an arithmetic number, because the mean of its divisors is an integer number (363055365).

Almost surely, 22420104865 is an apocalyptic number.

It is an amenable number.

2420104865 is a deficient number, since it is larger than the sum of its proper divisors (484338055).

2420104865 is a wasteful number, since it uses less digits than its factorization.

2420104865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52851.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 2420104865 is about 49194.5613355785. The cubic root of 2420104865 is about 1342.5940810745.

The spelling of 2420104865 in words is "two billion, four hundred twenty million, one hundred four thousand, eight hundred sixty-five".

Divisors: 1 5 11789 41057 58945 205285 484020973 2420104865