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164205448 = 2311171953109
BaseRepresentation
bin10011100100110…
…01001110001000
3102102222111112021
421302121032020
5314014033243
624143254224
74032503041
oct1162311610
9372874467
10164205448
1184764a90
1246baa374
13280339b4
1417b458c8
15e6386ed
hex9c99388

164205448 has 128 divisors (see below), whose sum is σ = 384912000. Its totient is φ = 64696320.

The previous prime is 164205427. The next prime is 164205469. The reversal of 164205448 is 844502461.

It is an interprime number because it is at equal distance from previous prime (164205427) and next prime (164205469).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1506418 + ... + 1506526.

It is an arithmetic number, because the mean of its divisors is an integer number (3007125).

Almost surely, 2164205448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164205448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192456000).

164205448 is an abundant number, since it is smaller than the sum of its proper divisors (220706552).

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

164205448 is a wasteful number, since it uses less digits than its factorization.

164205448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 164205448 is about 12814.2673610316. The cubic root of 164205448 is about 547.5988415058.

The spelling of 164205448 in words is "one hundred sixty-four million, two hundred five thousand, four hundred forty-eight".

Divisors: 1 2 4 8 11 17 19 22 34 38 44 53 68 76 88 106 109 136 152 187 209 212 218 323 374 418 424 436 583 646 748 836 872 901 1007 1166 1199 1292 1496 1672 1802 1853 2014 2071 2332 2398 2584 3553 3604 3706 4028 4142 4664 4796 5777 7106 7208 7412 8056 8284 9592 9911 11077 11554 14212 14824 16568 17119 19822 20383 22154 22781 23108 28424 34238 35207 39644 40766 44308 45562 46216 63547 68476 70414 79288 81532 88616 91124 98209 109763 127094 136952 140828 163064 182248 188309 196418 219526 254188 281656 376618 387277 392836 439052 508376 753236 774554 785672 878104 1080299 1207393 1506472 1549108 1865971 2160598 2414786 3098216 3731942 4321196 4829572 7463884 8642392 9659144 14927768 20525681 41051362 82102724 164205448