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13444938 = 2321357457
BaseRepresentation
bin110011010010…
…011101001010
3221022001222200
4303102131022
511420214223
61200101030
7222165033
oct63223512
927261880
1013444938
117653421
124604776
132a298b0
141adda8a
1512a8a43
hexcd274a

13444938 has 24 divisors (see below), whose sum is σ = 31372068. Its totient is φ = 4136832.

The previous prime is 13444933. The next prime is 13444967. The reversal of 13444938 is 83944431.

13444938 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13373649 + 71289 = 3657^2 + 267^2 .

It is not an unprimeable number, because it can be changed into a prime (13444933) 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, 28495 + ... + 28962.

Almost surely, 213444938 is an apocalyptic number.

13444938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13444938 is an abundant number, since it is smaller than the sum of its proper divisors (17927130).

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

13444938 is a wasteful number, since it uses less digits than its factorization.

13444938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57478 (or 57475 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 13444938 is about 3666.7339690793. The cubic root of 13444938 is about 237.7859926866.

The spelling of 13444938 in words is "thirteen million, four hundred forty-four thousand, nine hundred thirty-eight".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 57457 114914 172371 344742 517113 746941 1034226 1493882 2240823 4481646 6722469 13444938