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13465690 = 257227481
BaseRepresentation
bin110011010111…
…100001011010
3221100010110021
4303113201122
511421400230
61200341054
7222312400
oct63274132
927303407
1013465690
117667a77
12461478a
132a36184
141b07470
1512aec7a
hexcd785a

13465690 has 24 divisors (see below), whose sum is σ = 28196532. Its totient is φ = 4616640.

The previous prime is 13465679. The next prime is 13465693. The reversal of 13465690 is 9656431.

It can be written as a sum of positive squares in 2 ways, for example, as 12794929 + 670761 = 3577^2 + 819^2 .

It is a super-2 number, since 2×134656902 = 362649614352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13465693) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 13251 + ... + 14230.

Almost surely, 213465690 is an apocalyptic number.

13465690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13465690 is an abundant number, since it is smaller than the sum of its proper divisors (14730842).

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

13465690 is a wasteful number, since it uses less digits than its factorization.

13465690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27502 (or 27495 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 13465690 is about 3669.5626442398. The cubic root of 13465690 is about 237.9082691476.

The spelling of 13465690 in words is "thirteen million, four hundred sixty-five thousand, six hundred ninety".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 27481 54962 137405 192367 274810 384734 961835 1346569 1923670 2693138 6732845 13465690