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20342750180 = 2252633867443
BaseRepresentation
bin10010111100100001…
…011011101111100100
31221111201110210002212
4102330201123233210
5313130221001210
613202331422552
71320053344364
oct227441335744
957451423085
1020342750180
118699a52335
123b388b4a58
131bc26c2cac
14dada269a4
157e0dc1805
hex4bc85bbe4

20342750180 has 24 divisors (see below), whose sum is σ = 42882219072. Its totient is φ = 8106158432.

The previous prime is 20342750167. The next prime is 20342750189. The reversal of 20342750180 is 8105724302.

It is not an unprimeable number, because it can be changed into a prime (20342750189) 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, 1928462 + ... + 1938981.

It is an arithmetic number, because the mean of its divisors is an integer number (1786759128).

Almost surely, 220342750180 is an apocalyptic number.

20342750180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20342750180 is an abundant number, since it is smaller than the sum of its proper divisors (22539468892).

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

20342750180 is a wasteful number, since it uses less digits than its factorization.

20342750180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867715 (or 3867713 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 20342750180 in words is "twenty billion, three hundred forty-two million, seven hundred fifty thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 263 526 1052 1315 2630 5260 3867443 7734886 15469772 19337215 38674430 77348860 1017137509 2034275018 4068550036 5085687545 10171375090 20342750180