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20104310240 = 255717950277
BaseRepresentation
bin10010101110010011…
…110110110111100000
31220220002210202222222
4102232103312313200
5312133200411430
613122533050212
71311126550250
oct225623666740
956802722888
1020104310240
1185873a4933
123a90a86968
131b8519a281
14d8a0b9960
157c9ec29e5
hex4ae4f6de0

20104310240 has 48 divisors (see below), whose sum is σ = 54281640672. Its totient is φ = 6892905984.

The previous prime is 20104310231. The next prime is 20104310249. The reversal of 20104310240 is 4201340102.

It is an interprime number because it is at equal distance from previous prime (20104310231) and next prime (20104310249).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104310249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8974019 + ... + 8976258.

It is an arithmetic number, because the mean of its divisors is an integer number (1130867514).

Almost surely, 220104310240 is an apocalyptic number.

20104310240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20104310240 is an abundant number, since it is smaller than the sum of its proper divisors (34177330432).

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

20104310240 is a wasteful number, since it uses less digits than its factorization.

20104310240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17950299 (or 17950291 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20104310240 its reverse (4201340102), we get a palindrome (24305650342).

The spelling of 20104310240 in words is "twenty billion, one hundred four million, three hundred ten thousand, two hundred forty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 112 140 160 224 280 560 1120 17950277 35900554 71801108 89751385 125651939 143602216 179502770 251303878 287204432 359005540 502607756 574408864 628259695 718011080 1005215512 1256519390 1436022160 2010431024 2513038780 2872044320 4020862048 5026077560 10052155120 20104310240