[go: up one dir, main page]

Search a number
-
+
1644104 = 2371117157
BaseRepresentation
bin110010001011001001000
310002112021202
412101121020
5410102404
655123332
716655210
oct6213110
93075252
101644104
11a23270
12673548
13457457
1430b240
1522721e
hex191648

1644104 has 64 divisors (see below), whose sum is σ = 4095360. Its totient is φ = 599040.

The previous prime is 1644103. The next prime is 1644143. The reversal of 1644104 is 4014461.

It is a happy number.

It is a super-3 number, since 3×16441043 = 13332423872932910592, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1644103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10394 + ... + 10550.

It is an arithmetic number, because the mean of its divisors is an integer number (63990).

21644104 is an apocalyptic number.

1644104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1644104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2047680).

1644104 is an abundant number, since it is smaller than the sum of its proper divisors (2451256).

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

1644104 is a wasteful number, since it uses less digits than its factorization.

1644104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1644104 is about 1282.2261890946. The cubic root of 1644104 is about 118.0256575443.

Adding to 1644104 its reverse (4014461), we get a palindrome (5658565).

The spelling of 1644104 in words is "one million, six hundred forty-four thousand, one hundred four".

Divisors: 1 2 4 7 8 11 14 17 22 28 34 44 56 68 77 88 119 136 154 157 187 238 308 314 374 476 616 628 748 952 1099 1256 1309 1496 1727 2198 2618 2669 3454 4396 5236 5338 6908 8792 10472 10676 12089 13816 18683 21352 24178 29359 37366 48356 58718 74732 96712 117436 149464 205513 234872 411026 822052 1644104