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213648960 = 2635731793
BaseRepresentation
bin11001011110000…
…00011001000000
3112220000111021110
430233000121000
5414143231320
633111123320
75202662160
oct1457003100
9486014243
10213648960
11aa665698
125b673540
1335355a05
14205365a0
1513b535e0
hexcbc0640

213648960 has 112 divisors (see below), whose sum is σ = 775264896. Its totient is φ = 48832512.

The previous prime is 213648959. The next prime is 213649019. The reversal of 213648960 is 69846312.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9177 + ... + 22616.

It is an arithmetic number, because the mean of its divisors is an integer number (6922008).

Almost surely, 2213648960 is an apocalyptic number.

213648960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213648960 is an abundant number, since it is smaller than the sum of its proper divisors (561615936).

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

213648960 is a wasteful number, since it uses less digits than its factorization.

213648960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31820 (or 31810 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 213648960 is about 14616.7356136724. The cubic root of 213648960 is about 597.8151649274.

The spelling of 213648960 in words is "two hundred thirteen million, six hundred forty-eight thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 64 70 80 84 96 105 112 120 140 160 168 192 210 224 240 280 320 336 420 448 480 560 672 840 960 1120 1344 1680 2240 3360 6720 31793 63586 95379 127172 158965 190758 222551 254344 317930 381516 445102 476895 508688 635860 667653 763032 890204 953790 1017376 1112755 1271720 1335306 1526064 1780408 1907580 2034752 2225510 2543440 2670612 3052128 3338265 3560816 3815160 4451020 5086880 5341224 6104256 6676530 7121632 7630320 8902040 10173760 10682448 13353060 14243264 15260640 17804080 21364896 26706120 30521280 35608160 42729792 53412240 71216320 106824480 213648960