Search a number
-
+
108390831330 = 23531155974759
BaseRepresentation
bin110010011110010011…
…0001101010011100010
3101100202221110201221110
41210330212031103202
53233441023100310
6121443303404150
710555011602415
oct1447446152342
9340687421843
10108390831330
1141a71886951
121900ba53656
13a2b5003ab2
1453635c3b7c
152c45bd6d20
hex193c98d4e2

108390831330 has 64 divisors (see below), whose sum is σ = 268705382400. Its totient is φ = 27953511360.

The previous prime is 108390831271. The next prime is 108390831331. The reversal of 108390831330 is 33138093801.

It is not an unprimeable number, because it can be changed into a prime (108390831331) 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, 1412491 + ... + 1487249.

It is an arithmetic number, because the mean of its divisors is an integer number (4198521600).

Almost surely, 2108390831330 is an apocalyptic number.

108390831330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 108390831330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134352691200).

108390831330 is an abundant number, since it is smaller than the sum of its proper divisors (160314551070).

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

108390831330 is a wasteful number, since it uses less digits than its factorization.

108390831330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76359.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 108390831330 in words is "one hundred eight billion, three hundred ninety million, eight hundred thirty-one thousand, three hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 31 62 93 155 186 310 465 930 1559 3118 4677 7795 9354 15590 23385 46770 48329 74759 96658 144987 149518 224277 241645 289974 373795 448554 483290 724935 747590 1121385 1449870 2242770 2317529 4635058 6952587 11587645 13905174 23175290 34762935 69525870 116549281 233098562 349647843 582746405 699295686 1165492810 1748239215 3496478430 3613027711 7226055422 10839083133 18065138555 21678166266 36130277110 54195415665 108390831330