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13011852 = 2237222129
BaseRepresentation
bin110001101000…
…101110001100
3220111001220110
4301220232030
511312334402
61142520020
7215412300
oct61505614
926431813
1013011852
117387aa7
124436010
132907729
141a29d00
15122056c
hexc68b8c

13011852 has 36 divisors (see below), whose sum is σ = 35319480. Its totient is φ = 3717504.

The previous prime is 13011841. The next prime is 13011863. The reversal of 13011852 is 25811031.

It is an interprime number because it is at equal distance from previous prime (13011841) and next prime (13011863).

It is a super-3 number, since 3×130118523 (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 11 ways as a sum of consecutive naturals, for example, 10477 + ... + 11652.

Almost surely, 213011852 is an apocalyptic number.

13011852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13011852 is an abundant number, since it is smaller than the sum of its proper divisors (22307628).

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

13011852 is a wasteful number, since it uses less digits than its factorization.

13011852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22150 (or 22141 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 13011852 is about 3607.1944777070. The cubic root of 13011852 is about 235.2049035259.

Adding to 13011852 its reverse (25811031), we get a palindrome (38822883).

The spelling of 13011852 in words is "thirteen million, eleven thousand, eight hundred fifty-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 49 84 98 147 196 294 588 22129 44258 66387 88516 132774 154903 265548 309806 464709 619612 929418 1084321 1858836 2168642 3252963 4337284 6505926 13011852