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212492952 = 23327232797
BaseRepresentation
bin11001010101001…
…10001010011000
3112210211202112100
430222212022120
5413344233302
633030243400
75160105660
oct1452461230
9483752470
10212492952
11a9a46111
125b1b6560
133503c799
14203151a0
15139c5d1c
hexcaa6298

212492952 has 144 divisors (see below), whose sum is σ = 688418640. Its totient is φ = 57999744.

The previous prime is 212492933. The next prime is 212492963. The reversal of 212492952 is 259294212.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 266218 + ... + 267014.

It is an arithmetic number, because the mean of its divisors is an integer number (4780685).

Almost surely, 2212492952 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 212492952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344209320).

212492952 is an abundant number, since it is smaller than the sum of its proper divisors (475925688).

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

212492952 is a wasteful number, since it uses less digits than its factorization.

212492952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 832 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 212492952 is about 14577.1379907031. The cubic root of 212492952 is about 596.7349985029.

It can be divided in two parts, 212492 and 952, that added together give a square (213444 = 4622).

The spelling of 212492952 in words is "two hundred twelve million, four hundred ninety-two thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 23 24 28 36 42 46 56 63 69 72 84 92 126 138 161 168 184 207 252 276 322 414 483 504 529 552 644 797 828 966 1058 1288 1449 1587 1594 1656 1932 2116 2391 2898 3174 3188 3703 3864 4232 4761 4782 5579 5796 6348 6376 7173 7406 9522 9564 11109 11158 11592 12696 14346 14812 16737 18331 19044 19128 22218 22316 28692 29624 33327 33474 36662 38088 44436 44632 50211 54993 57384 66654 66948 73324 88872 100422 109986 128317 133308 133896 146648 164979 200844 219972 256634 266616 329958 384951 401688 421613 439944 513268 659916 769902 843226 1026536 1154853 1264839 1319832 1539804 1686452 2309706 2529678 2951291 3079608 3372904 3794517 4619412 5059356 5902582 7589034 8853873 9238824 10118712 11805164 15178068 17707746 23610328 26561619 30356136 35415492 53123238 70830984 106246476 212492952