Search a number
-
+
212485152 = 25311311647
BaseRepresentation
bin11001010101001…
…00010000100000
3112210211100211110
430222210100200
5413344011102
633030143320
75160044145
oct1452442040
9483740743
10212485152
11a9a40270
125b1b1b40
1335039079
14203123cc
15139c386c
hexcaa4420

212485152 has 96 divisors (see below), whose sum is σ = 611380224. Its totient is φ = 64083200.

The previous prime is 212485127. The next prime is 212485153. The reversal of 212485152 is 251584212.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (212485153) 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, 328093 + ... + 328739.

It is an arithmetic number, because the mean of its divisors is an integer number (6368544).

Almost surely, 2212485152 is an apocalyptic number.

212485152 is a gapful number since it is divisible by the number (22) 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 212485152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305690112).

212485152 is an abundant number, since it is smaller than the sum of its proper divisors (398895072).

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

212485152 is a wasteful number, since it uses less digits than its factorization.

212485152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982 (or 974 counting only the distinct ones).

The product of its digits is 6400, while the sum is 30.

The square root of 212485152 is about 14576.8704460182. The cubic root of 212485152 is about 596.7276969431.

The spelling of 212485152 in words is "two hundred twelve million, four hundred eighty-five thousand, one hundred fifty-two".

Divisors: 1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 66 88 96 132 176 264 311 352 528 622 647 933 1056 1244 1294 1866 1941 2488 2588 3421 3732 3882 4976 5176 6842 7117 7464 7764 9952 10263 10352 13684 14234 14928 15528 20526 20704 21351 27368 28468 29856 31056 41052 42702 54736 56936 62112 82104 85404 109472 113872 164208 170808 201217 227744 328416 341616 402434 603651 683232 804868 1207302 1609736 2213387 2414604 3219472 4426774 4829208 6438944 6640161 8853548 9658416 13280322 17707096 19316832 26560644 35414192 53121288 70828384 106242576 212485152