[go: up one dir, main page]

Search a number
-
+
20443698 = 23311127271
BaseRepresentation
bin100110111111…
…1001000110010
31102110122111000
41031333020302
520213144243
62010102430
7335524422
oct115771062
942418430
1020443698
11105a3720
126a1aa16
13430a382
142a02482
151bdc5d3
hex137f232

20443698 has 64 divisors (see below), whose sum is σ = 50135040. Its totient is φ = 6123600.

The previous prime is 20443697. The next prime is 20443727. The reversal of 20443698 is 89634402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20443691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75303 + ... + 75573.

It is an arithmetic number, because the mean of its divisors is an integer number (783360).

Almost surely, 220443698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20443698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25067520).

20443698 is an abundant number, since it is smaller than the sum of its proper divisors (29691342).

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

20443698 is a wasteful number, since it uses less digits than its factorization.

20443698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 20443698 is about 4521.4707784083. The cubic root of 20443698 is about 273.4344007899.

The spelling of 20443698 in words is "twenty million, four hundred forty-three thousand, six hundred ninety-eight".

Divisors: 1 2 3 6 9 11 18 22 27 33 54 66 99 127 198 254 271 297 381 542 594 762 813 1143 1397 1626 2286 2439 2794 2981 3429 4191 4878 5962 6858 7317 8382 8943 12573 14634 17886 25146 26829 34417 37719 53658 68834 75438 80487 103251 160974 206502 309753 378587 619506 757174 929259 1135761 1858518 2271522 3407283 6814566 10221849 20443698