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38670385 = 513594929
BaseRepresentation
bin1001001110000…
…1000000110001
32200202122210111
42103201000301
534344423020
63500501321
7646456435
oct223410061
980678714
1038670385
111a9126a6
1210b4a841
13801c5b0
1451c89c5
1535dcd5a
hex24e1031

38670385 has 8 divisors (see below), whose sum is σ = 49974120. Its totient is φ = 28556544.

The previous prime is 38670367. The next prime is 38670389. The reversal of 38670385 is 58307683.

It can be written as a sum of positive squares in 4 ways, for example, as 440896 + 38229489 = 664^2 + 6183^2 .

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 38670385 - 217 = 38539313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38670389) 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, 297400 + ... + 297529.

It is an arithmetic number, because the mean of its divisors is an integer number (6246765).

Almost surely, 238670385 is an apocalyptic number.

It is an amenable number.

38670385 is a deficient number, since it is larger than the sum of its proper divisors (11303735).

38670385 is a wasteful number, since it uses less digits than its factorization.

38670385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594947.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 38670385 is about 6218.5516802548. The cubic root of 38670385 is about 338.1630604516.

The spelling of 38670385 in words is "thirty-eight million, six hundred seventy thousand, three hundred eighty-five".

Divisors: 1 5 13 65 594929 2974645 7734077 38670385