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38272105 = 515974793
BaseRepresentation
bin1001000111111…
…1110001101001
32200000102110101
42101333301221
534244201410
63444145401
7643210324
oct221776151
980012411
1038272105
111a670443
1210998261
137c10221
1451237bb
15355ed3a
hex247fc69

38272105 has 8 divisors (see below), whose sum is σ = 45964872. Its totient is φ = 30592128.

The previous prime is 38272067. The next prime is 38272109. The reversal of 38272105 is 50127283.

It can be written as a sum of positive squares in 4 ways, for example, as 4875264 + 33396841 = 2208^2 + 5779^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 38272105 - 29 = 38271593 is a prime.

It is a super-2 number, since 2×382721052 = 2929508042262050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38272109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5589 + ... + 10381.

It is an arithmetic number, because the mean of its divisors is an integer number (5745609).

Almost surely, 238272105 is an apocalyptic number.

It is an amenable number.

38272105 is a deficient number, since it is larger than the sum of its proper divisors (7692767).

38272105 is a wasteful number, since it uses less digits than its factorization.

38272105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6395.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 38272105 is about 6186.4452636389. The cubic root of 38272105 is about 336.9980980618.

Adding to 38272105 its reverse (50127283), we get a palindrome (88399388).

The spelling of 38272105 in words is "thirty-eight million, two hundred seventy-two thousand, one hundred five".

Divisors: 1 5 1597 4793 7985 23965 7654421 38272105