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13938210 = 23351113192
BaseRepresentation
bin110101001010…
…111000100010
3222020010122000
4311022320202
512032010320
61214424430
7226321116
oct65127042
928203560
1013938210
11795aa90
124802116
132b70280
141bcb746
151354c90
hexd4ae22

13938210 has 192 divisors, whose sum is σ = 46085760. Its totient is φ = 2954880.

The previous prime is 13938209. The next prime is 13938227. The reversal of 13938210 is 1283931.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 733581 + ... + 733599.

It is an arithmetic number, because the mean of its divisors is an integer number (240030).

Almost surely, 213938210 is an apocalyptic number.

13938210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13938210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23042880).

13938210 is an abundant number, since it is smaller than the sum of its proper divisors (32147550).

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

13938210 is a wasteful number, since it uses less digits than its factorization.

13938210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 13938210 is about 3733.3912197893. The cubic root of 13938210 is about 240.6591256486.

The spelling of 13938210 in words is "thirteen million, nine hundred thirty-eight thousand, two hundred ten".