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164811470 = 2531751991
BaseRepresentation
bin10011101001011…
…01001011001110
3102111010021211112
421310231023032
5314142431340
624204252022
74040605625
oct1164551316
9374107745
10164811470
118503932a
1247241012
13281b67a5
1417c626bc
15e708065
hex9d2d2ce

164811470 has 16 divisors (see below), whose sum is σ = 297602208. Its totient is φ = 65715360.

The previous prime is 164811463. The next prime is 164811473. The reversal of 164811470 is 74118461.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164811473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22826 + ... + 29165.

It is an arithmetic number, because the mean of its divisors is an integer number (18600138).

Almost surely, 2164811470 is an apocalyptic number.

164811470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164811470 is a deficient number, since it is larger than the sum of its proper divisors (132790738).

164811470 is a wasteful number, since it uses less digits than its factorization.

164811470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52315.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 164811470 is about 12837.8919609101. The cubic root of 164811470 is about 548.2716765227.

The spelling of 164811470 in words is "one hundred sixty-four million, eight hundred eleven thousand, four hundred seventy".

Divisors: 1 2 5 10 317 634 1585 3170 51991 103982 259955 519910 16481147 32962294 82405735 164811470