Search a number
-
+
107281664 = 287131457
BaseRepresentation
bin1100110010011…
…11110100000000
321110212110202222
412121033310000
5204431003124
614351230212
72441610350
oct631176400
9243773688
10107281664
1155615336
122bb18368
13192c2c99
1410368b60
15964225e
hex664fd00

107281664 has 72 divisors (see below), whose sum is σ = 247144128. Its totient is φ = 45527040.

The previous prime is 107281663. The next prime is 107281687. The reversal of 107281664 is 466182701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107281661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234524 + ... + 234980.

Almost surely, 2107281664 is an apocalyptic number.

107281664 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 107281664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123572064).

107281664 is an abundant number, since it is smaller than the sum of its proper divisors (139862464).

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

107281664 is an equidigital number, since it uses as much as digits as its factorization.

107281664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 107281664 is about 10357.6862281110. The cubic root of 107281664 is about 475.1621444599.

The spelling of 107281664 in words is "one hundred seven million, two hundred eighty-one thousand, six hundred sixty-four".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 128 131 224 256 262 448 457 524 896 914 917 1048 1792 1828 1834 2096 3199 3656 3668 4192 6398 7312 7336 8384 12796 14624 14672 16768 25592 29248 29344 33536 51184 58496 58688 59867 102368 116992 117376 119734 204736 234752 239468 409472 419069 478936 818944 838138 957872 1676276 1915744 3352552 3831488 6705104 7662976 13410208 15325952 26820416 53640832 107281664