Search a number
-
+
20620160512 = 29724123873
BaseRepresentation
bin10011001101000011…
…101010111000000000
31222020001110200112121
4103031003222320000
5314212230114022
613250041334024
71326662321020
oct231503527000
958201420477
1020620160512
1188215a7876
123bb5797314
131c38011a13
14dd87d9a80
1580a41c2c7
hex4cd0eae00

20620160512 has 80 divisors (see below), whose sum is σ = 47283125472. Its totient is φ = 8800174080.

The previous prime is 20620160459. The next prime is 20620160521. The reversal of 20620160512 is 21506102602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 851808 + ... + 875680.

Almost surely, 220620160512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20620160512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23641562736).

20620160512 is an abundant number, since it is smaller than the sum of its proper divisors (26662964960).

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

20620160512 is an equidigital number, since it uses as much as digits as its factorization.

20620160512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24139 (or 24123 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 20620160512 in words is "twenty billion, six hundred twenty million, one hundred sixty thousand, five hundred twelve".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 128 224 241 256 448 482 512 896 964 1687 1792 1928 3374 3584 3856 6748 7712 13496 15424 23873 26992 30848 47746 53984 61696 95492 107968 123392 167111 190984 215936 334222 381968 431872 668444 763936 863744 1336888 1527872 2673776 3055744 5347552 5753393 6111488 10695104 11506786 12222976 21390208 23013572 40273751 42780416 46027144 80547502 85560832 92054288 161095004 184108576 322190008 368217152 644380016 736434304 1288760032 1472868608 2577520064 2945737216 5155040128 10310080256 20620160512