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164205312 = 2831712577
BaseRepresentation
bin10011100100110…
…01001100000000
3102102222111100020
421302121030000
5314014032222
624143253440
74032502455
oct1162311400
9372874306
10164205312
1184764977
1246baa280
132803390b
1417b4582c
15e63865c
hex9c99300

164205312 has 72 divisors (see below), whose sum is σ = 462769776. Its totient is φ = 51511296.

The previous prime is 164205299. The next prime is 164205341. The reversal of 164205312 is 213502461.

164205312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 6768 + ... + 19344.

It is an arithmetic number, because the mean of its divisors is an integer number (6427358).

Almost surely, 2164205312 is an apocalyptic number.

164205312 is a gapful number since it is divisible by the number (12) 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 164205312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231384888).

164205312 is an abundant number, since it is smaller than the sum of its proper divisors (298564464).

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

164205312 is a wasteful number, since it uses less digits than its factorization.

164205312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12613 (or 12599 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 164205312 is about 12814.2620544454. The cubic root of 164205312 is about 547.5986903264.

Adding to 164205312 its reverse (213502461), we get a palindrome (377707773).

The spelling of 164205312 in words is "one hundred sixty-four million, two hundred five thousand, three hundred twelve".

Divisors: 1 2 3 4 6 8 12 16 17 24 32 34 48 51 64 68 96 102 128 136 192 204 256 272 384 408 544 768 816 1088 1632 2176 3264 4352 6528 12577 13056 25154 37731 50308 75462 100616 150924 201232 213809 301848 402464 427618 603696 641427 804928 855236 1207392 1282854 1609856 1710472 2414784 2565708 3219712 3420944 4829568 5131416 6841888 9659136 10262832 13683776 20525664 27367552 41051328 54735104 82102656 164205312