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13101938 = 254112109
BaseRepresentation
bin110001111110…
…101101110010
3220122122110222
4301332231302
511323230223
61144453042
7216236033
oct61765562
926578428
1013101938
117439753
12447a182
132939735
141a50a8a
15123c0c8
hexc7eb72

13101938 has 8 divisors (see below), whose sum is σ = 19690860. Its totient is φ = 6538320.

The previous prime is 13101937. The next prime is 13101943. The reversal of 13101938 is 83910131.

It can be written as a sum of positive squares in 2 ways, for example, as 11854249 + 1247689 = 3443^2 + 1117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13101931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4973 + ... + 7136.

Almost surely, 213101938 is an apocalyptic number.

13101938 is a deficient number, since it is larger than the sum of its proper divisors (6588922).

13101938 is a wasteful number, since it uses less digits than its factorization.

13101938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12652.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 13101938 is about 3619.6599287778. The cubic root of 13101938 is about 235.7464599747.

The spelling of 13101938 in words is "thirteen million, one hundred one thousand, nine hundred thirty-eight".

Divisors: 1 2 541 1082 12109 24218 6550969 13101938