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211256052 = 22372359279
BaseRepresentation
bin11001001011110…
…00001011110100
3112201111220211020
430211320023310
5413040143202
632543541140
75143434600
oct1445701364
9481456736
10211256052
11a9280887
125a8ba7b0
13349c87a7
14200b2500
151382e5bc
hexc9782f4

211256052 has 36 divisors (see below), whose sum is σ = 573410880. Its totient is φ = 60358704.

The previous prime is 211256047. The next prime is 211256053. The reversal of 211256052 is 250652112.

It is a happy number.

211256052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211256053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179052 + ... + 180227.

It is an arithmetic number, because the mean of its divisors is an integer number (15928080).

Almost surely, 2211256052 is an apocalyptic number.

It is an amenable number.

211256052 is an abundant number, since it is smaller than the sum of its proper divisors (362154828).

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

211256052 is a wasteful number, since it uses less digits than its factorization.

211256052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359300 (or 359291 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 211256052 is about 14534.6500473868. The cubic root of 211256052 is about 595.5748999362.

The spelling of 211256052 in words is "two hundred eleven million, two hundred fifty-six thousand, fifty-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 49 84 98 147 196 294 588 359279 718558 1077837 1437116 2155674 2514953 4311348 5029906 7544859 10059812 15089718 17604671 30179436 35209342 52814013 70418684 105628026 211256052