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2104280620 = 2251331261077
BaseRepresentation
bin111110101101100…
…1100011000101100
312102122120112100021
41331123030120230
513302143434440
6544450011524
7103101042631
oct17533143054
95378515307
102104280620
1198a8a21a2
124a8876ba4
13276c59380
1415d682188
15c4b1084a
hex7d6cc62c

2104280620 has 48 divisors (see below), whose sum is σ = 4912443648. Its totient is φ = 751898880.

The previous prime is 2104280617. The next prime is 2104280639. The reversal of 2104280620 is 260824012.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 122479 + ... + 138598.

It is an arithmetic number, because the mean of its divisors is an integer number (102342576).

Almost surely, 22104280620 is an apocalyptic number.

2104280620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2104280620 is an abundant number, since it is smaller than the sum of its proper divisors (2808163028).

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

2104280620 is a wasteful number, since it uses less digits than its factorization.

2104280620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261130 (or 261128 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 2104280620 is about 45872.4385660933. The cubic root of 2104280620 is about 1281.4486812416.

The spelling of 2104280620 in words is "two billion, one hundred four million, two hundred eighty thousand, six hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 31 52 62 65 124 130 155 260 310 403 620 806 1612 2015 4030 8060 261077 522154 1044308 1305385 2610770 3394001 5221540 6788002 8093387 13576004 16186774 16970005 32373548 33940010 40466935 67880020 80933870 105214031 161867740 210428062 420856124 526070155 1052140310 2104280620