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214902189 = 3247836121
BaseRepresentation
bin11001100111100…
…10010110101101
3112222101011101100
430303302112231
5420003332224
633154033313
75216431665
oct1463622655
9488334340
10214902189
11100341217
125bb78839
13356a4278
14207811a5
1513ceeac9
hexccf25ad

214902189 has 24 divisors (see below), whose sum is σ = 320890752. Its totient is φ = 138507840.

The previous prime is 214902169. The next prime is 214902229. The reversal of 214902189 is 981209412.

It is not a de Polignac number, because 214902189 - 211 = 214900141 is a prime.

It is a super-3 number, since 3×2149021893 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214902119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32049 + ... + 38169.

It is an arithmetic number, because the mean of its divisors is an integer number (13370448).

Almost surely, 2214902189 is an apocalyptic number.

It is an amenable number.

214902189 is a deficient number, since it is larger than the sum of its proper divisors (105988563).

214902189 is a wasteful number, since it uses less digits than its factorization.

214902189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6257 (or 6254 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 214902189 is about 14659.5425917728. The cubic root of 214902189 is about 598.9817813621.

The spelling of 214902189 in words is "two hundred fourteen million, nine hundred two thousand, one hundred eighty-nine".

Divisors: 1 3 9 47 83 141 249 423 747 3901 6121 11703 18363 35109 55089 287687 508043 863061 1524129 2589183 4572387 23878021 71634063 214902189