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13320664 = 237793011
BaseRepresentation
bin110010110100…
…000111011000
3221001202111221
4302310013120
511402230124
61153301424
7221136520
oct62640730
927052457
1013320664
117579015
124564874
1329b5166
141aaa680
151281ce4
hexcb41d8

13320664 has 32 divisors (see below), whose sum is σ = 28915200. Its totient is φ = 5634720.

The previous prime is 13320617. The next prime is 13320677. The reversal of 13320664 is 46602331.

Adding to 13320664 its reverse (46602331), we get a palindrome (59922995).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2919 + ... + 5929.

It is an arithmetic number, because the mean of its divisors is an integer number (903600).

Almost surely, 213320664 is an apocalyptic number.

13320664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13320664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14457600).

13320664 is an abundant number, since it is smaller than the sum of its proper divisors (15594536).

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

13320664 is a wasteful number, since it uses less digits than its factorization.

13320664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103 (or 3099 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 13320664 is about 3649.7484844849. The cubic root of 13320664 is about 237.0510907201.

The spelling of 13320664 in words is "thirteen million, three hundred twenty thousand, six hundred sixty-four".

Divisors: 1 2 4 7 8 14 28 56 79 158 316 553 632 1106 2212 3011 4424 6022 12044 21077 24088 42154 84308 168616 237869 475738 951476 1665083 1902952 3330166 6660332 13320664