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6930144 = 253313617
BaseRepresentation
bin11010011011111011100000
3111001002101000
4122123323200
53233231034
6404312000
7112622334
oct32337340
914032330
106930144
113a037a1
1223a2600
1315884a0
14cc57c4
1591d599
hex69bee0

6930144 has 96 divisors (see below), whose sum is σ = 21803040. Its totient is φ = 2128896.

The previous prime is 6930127. The next prime is 6930151. The reversal of 6930144 is 4410396.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10924 + ... + 11540.

It is an arithmetic number, because the mean of its divisors is an integer number (227115).

Almost surely, 26930144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6930144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10901520).

6930144 is an abundant number, since it is smaller than the sum of its proper divisors (14872896).

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

6930144 is a wasteful number, since it uses less digits than its factorization.

6930144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 6930144 is about 2632.5166666139. The cubic root of 6930144 is about 190.6546577165.

The spelling of 6930144 in words is "six million, nine hundred thirty thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 9 12 13 16 18 24 26 27 32 36 39 48 52 54 72 78 96 104 108 117 144 156 208 216 234 288 312 351 416 432 468 617 624 702 864 936 1234 1248 1404 1851 1872 2468 2808 3702 3744 4936 5553 5616 7404 8021 9872 11106 11232 14808 16042 16659 19744 22212 24063 29616 32084 33318 44424 48126 59232 64168 66636 72189 88848 96252 128336 133272 144378 177696 192504 216567 256672 266544 288756 385008 433134 533088 577512 770016 866268 1155024 1732536 2310048 3465072 6930144