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20748980232 = 2332436701867
BaseRepresentation
bin10011010100101111…
…000101000000001000
31222120000212101222100
4103110233011000020
5314443214331412
613310522353400
71333115264511
oct232457050010
958500771870
1020748980232
118888292a52
12403095b860
131c589061c6
14100b96da08
158168b5edc
hex4d4bc5008

20748980232 has 48 divisors (see below), whose sum is σ = 57502027440. Its totient is φ = 6755480928.

The previous prime is 20748980209. The next prime is 20748980269. The reversal of 20748980232 is 23208984702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3347838 + ... + 3354029.

It is an arithmetic number, because the mean of its divisors is an integer number (1197958905).

Almost surely, 220748980232 is an apocalyptic number.

It is an amenable number.

20748980232 is an abundant number, since it is smaller than the sum of its proper divisors (36753047208).

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

20748980232 is a wasteful number, since it uses less digits than its factorization.

20748980232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6701922 (or 6701915 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 20748980232 in words is "twenty billion, seven hundred forty-eight million, nine hundred eighty thousand, two hundred thirty-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 43 72 86 129 172 258 344 387 516 774 1032 1548 3096 6701867 13403734 20105601 26807468 40211202 53614936 60316803 80422404 120633606 160844808 241267212 288180281 482534424 576360562 864540843 1152721124 1729081686 2305442248 2593622529 3458163372 5187245058 6916326744 10374490116 20748980232