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164728916 = 221123110979
BaseRepresentation
bin10011101000110…
…01000001010100
3102110222002120222
421310121001110
5314132311131
624202413512
74040113142
oct1164310124
9373862528
10164728916
1184a92300
1247201298
1328188041
1417c40592
15e6dd87b
hex9d19054

164728916 has 36 divisors (see below), whose sum is σ = 327116160. Its totient is φ = 72454800.

The previous prime is 164728913. The next prime is 164728919. The reversal of 164728916 is 619827461.

It is an interprime number because it is at equal distance from previous prime (164728913) and next prime (164728919).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164728913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9515 + ... + 20493.

It is an arithmetic number, because the mean of its divisors is an integer number (9086560).

Almost surely, 2164728916 is an apocalyptic number.

It is an amenable number.

164728916 is a deficient number, since it is larger than the sum of its proper divisors (162387244).

164728916 is a wasteful number, since it uses less digits than its factorization.

164728916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11036 (or 11023 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 164728916 is about 12834.6763106827. The cubic root of 164728916 is about 548.1801182120.

The spelling of 164728916 in words is "one hundred sixty-four million, seven hundred twenty-eight thousand, nine hundred sixteen".

Divisors: 1 2 4 11 22 31 44 62 121 124 242 341 484 682 1364 3751 7502 10979 15004 21958 43916 120769 241538 340349 483076 680698 1328459 1361396 2656918 3743839 5313836 7487678 14975356 41182229 82364458 164728916