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387140115 = 3525809341
BaseRepresentation
bin10111000100110…
…100101000010011
3222222110202101210
4113010310220103
51243101440430
6102225431203
712410431245
oct2704645023
9888422353
10387140115
1118959210a
12a979b503
136228b0bb
14395b8095
1523ec32b0
hex17134a13

387140115 has 8 divisors (see below), whose sum is σ = 619424208. Its totient is φ = 206474720.

The previous prime is 387140113. The next prime is 387140119. The reversal of 387140115 is 511041783.

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

It is not a de Polignac number, because 387140115 - 21 = 387140113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387140113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12904656 + ... + 12904685.

It is an arithmetic number, because the mean of its divisors is an integer number (77428026).

Almost surely, 2387140115 is an apocalyptic number.

387140115 is a deficient number, since it is larger than the sum of its proper divisors (232284093).

387140115 is a wasteful number, since it uses less digits than its factorization.

387140115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25809349.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 387140115 is about 19675.8764734891. The cubic root of 387140115 is about 728.8240998454.

Adding to 387140115 its reverse (511041783), we get a palindrome (898181898).

The spelling of 387140115 in words is "three hundred eighty-seven million, one hundred forty thousand, one hundred fifteen".

Divisors: 1 3 5 15 25809341 77428023 129046705 387140115