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13321460 = 225666073
BaseRepresentation
bin110010110100…
…010011110100
3221001210121102
4302310103310
511402241320
61153305232
7221142035
oct62642364
927053542
1013321460
117579679
124565218
1329b5629
141aaaa8c
151282175
hexcb44f4

13321460 has 12 divisors (see below), whose sum is σ = 27975108. Its totient is φ = 5328576.

The previous prime is 13321459. The next prime is 13321463. The reversal of 13321460 is 6412331.

13321460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7695076 + 5626384 = 2774^2 + 2372^2 .

It is a super-2 number, since 2×133214602 = 354922593063200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 666073 = 13321460 / (1 + 3 + 3 + 2 + 1 + 4 + 6 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333017 + ... + 333056.

It is an arithmetic number, because the mean of its divisors is an integer number (2331259).

Almost surely, 213321460 is an apocalyptic number.

13321460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13321460 is an abundant number, since it is smaller than the sum of its proper divisors (14653648).

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

13321460 is a wasteful number, since it uses less digits than its factorization.

13321460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666082 (or 666080 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13321460 is about 3649.8575314661. The cubic root of 13321460 is about 237.0558124294.

Adding to 13321460 its reverse (6412331), we get a palindrome (19733791).

The spelling of 13321460 in words is "thirteen million, three hundred twenty-one thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 666073 1332146 2664292 3330365 6660730 13321460