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13442744 = 237240049
BaseRepresentation
bin110011010001…
…111010111000
3221021221222102
4303101322320
511420131434
61200042532
7222155450
oct63217270
927257872
1013442744
117651807
124603448
132a288b3
141adcd60
1512a807e
hexcd1eb8

13442744 has 16 divisors (see below), whose sum is σ = 28806000. Its totient is φ = 5761152.

The previous prime is 13442743. The next prime is 13442749. The reversal of 13442744 is 44724431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13442743) 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 3 ways as a sum of consecutive naturals, for example, 119969 + ... + 120080.

It is an arithmetic number, because the mean of its divisors is an integer number (1800375).

Almost surely, 213442744 is an apocalyptic number.

13442744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13442744 is an abundant number, since it is smaller than the sum of its proper divisors (15363256).

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

13442744 is a wasteful number, since it uses less digits than its factorization.

13442744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240062 (or 240058 counting only the distinct ones).

The product of its digits is 10752, while the sum is 29.

The square root of 13442744 is about 3666.4347805464. The cubic root of 13442744 is about 237.7730576859.

The spelling of 13442744 in words is "thirteen million, four hundred forty-two thousand, seven hundred forty-four".

Divisors: 1 2 4 7 8 14 28 56 240049 480098 960196 1680343 1920392 3360686 6721372 13442744