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188485206 = 237131918169
BaseRepresentation
bin10110011110000…
…00111001010110
3111010200001002120
423033000321112
5341223011311
630411520410
74446045360
oct1317007126
9433601076
10188485206
11974387a8
1253159106
1330085110
141b065d30
1511832706
hexb3c0e56

188485206 has 64 divisors (see below), whose sum is σ = 488409600. Its totient is φ = 47091456.

The previous prime is 188485163. The next prime is 188485237. The reversal of 188485206 is 602584881.

188485206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 1290 + ... + 19458.

It is an arithmetic number, because the mean of its divisors is an integer number (7631400).

Almost surely, 2188485206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188485206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244204800).

188485206 is an abundant number, since it is smaller than the sum of its proper divisors (299924394).

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

188485206 is a wasteful number, since it uses less digits than its factorization.

188485206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18213.

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 188485206 is about 13728.9914414716. The cubic root of 188485206 is about 573.3578411043.

The spelling of 188485206 in words is "one hundred eighty-eight million, four hundred eighty-five thousand, two hundred six".

Divisors: 1 2 3 6 7 13 14 19 21 26 38 39 42 57 78 91 114 133 182 247 266 273 399 494 546 741 798 1482 1729 3458 5187 10374 18169 36338 54507 109014 127183 236197 254366 345211 381549 472394 690422 708591 763098 1035633 1417182 1653379 2071266 2416477 3306758 4487743 4832954 4960137 7249431 8975486 9920274 13463229 14498862 26926458 31414201 62828402 94242603 188485206