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387089087 = 7115027131
BaseRepresentation
bin10111000100101…
…000001010111111
3222222101011101212
4113010220022333
51243043322322
6102224355035
712410126420
oct2704501277
9888334355
10387089087
11189557840
12a9775a7b
1362270ac8
14395a3647
1523eb30e2
hex171282bf

387089087 has 8 divisors (see below), whose sum is σ = 482604672. Its totient is φ = 301627800.

The previous prime is 387089081. The next prime is 387089107. The reversal of 387089087 is 780980783.

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 387089087 - 26 = 387089023 is a prime.

It is a super-2 number, since 2×3870890872 = 299675922548987138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387089081) 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, 2513489 + ... + 2513642.

It is an arithmetic number, because the mean of its divisors is an integer number (60325584).

Almost surely, 2387089087 is an apocalyptic number.

387089087 is a deficient number, since it is larger than the sum of its proper divisors (95515585).

387089087 is a wasteful number, since it uses less digits than its factorization.

387089087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027149.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 387089087 is about 19674.5797159685. The cubic root of 387089087 is about 728.7920769258.

The spelling of 387089087 in words is "three hundred eighty-seven million, eighty-nine thousand, eighty-seven".

Divisors: 1 7 11 77 5027131 35189917 55298441 387089087