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13011669 = 3211131431
BaseRepresentation
bin110001101000…
…101011010101
3220111001122200
4301220223111
511312333134
61142515113
7215411616
oct61505325
926431580
1013011669
117387950
124435a99
132907618
141a29c0d
151220499
hexc68ad5

13011669 has 12 divisors (see below), whose sum is σ = 20503392. Its totient is φ = 7885800.

The previous prime is 13011641. The next prime is 13011697. The reversal of 13011669 is 96611031.

13011669 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13011641) and next prime (13011697).

It is not a de Polignac number, because 13011669 - 27 = 13011541 is a prime.

It is a super-2 number, since 2×130116692 = 338607060331122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65617 + ... + 65814.

It is an arithmetic number, because the mean of its divisors is an integer number (1708616).

Almost surely, 213011669 is an apocalyptic number.

It is an amenable number.

13011669 is a deficient number, since it is larger than the sum of its proper divisors (7491723).

13011669 is a wasteful number, since it uses less digits than its factorization.

13011669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131448 (or 131445 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 13011669 is about 3607.1691116442. The cubic root of 13011669 is about 235.2038008722.

The spelling of 13011669 in words is "thirteen million, eleven thousand, six hundred sixty-nine".

Divisors: 1 3 9 11 33 99 131431 394293 1182879 1445741 4337223 13011669