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13442292 = 22321013697
BaseRepresentation
bin110011010001…
…110011110100
3221021221100200
4303101303310
511420123132
61200040500
7222154233
oct63216364
927257320
1013442292
117651436
124603130
132a28626
141adcb1a
1512a7d7c
hexcd1cf4

13442292 has 36 divisors (see below), whose sum is σ = 34324836. Its totient is φ = 4435200.

The previous prime is 13442287. The next prime is 13442309. The reversal of 13442292 is 29224431.

It can be written as a sum of positive squares in 2 ways, for example, as 7420176 + 6022116 = 2724^2 + 2454^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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, 1788 + ... + 5484.

Almost surely, 213442292 is an apocalyptic number.

13442292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13442292 is an abundant number, since it is smaller than the sum of its proper divisors (20882544).

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

13442292 is a wasteful number, since it uses less digits than its factorization.

13442292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808 (or 3803 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 13442292 is about 3666.3731397663. The cubic root of 13442292 is about 237.7703926887.

The spelling of 13442292 in words is "thirteen million, four hundred forty-two thousand, two hundred ninety-two".

Divisors: 1 2 3 4 6 9 12 18 36 101 202 303 404 606 909 1212 1818 3636 3697 7394 11091 14788 22182 33273 44364 66546 133092 373397 746794 1120191 1493588 2240382 3360573 4480764 6721146 13442292