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3087421987 = 131439165041
BaseRepresentation
bin1011100000000110…
…0101001000100011
321222011112021202111
42320001211020203
522310340000422
61230210100151
7136336440166
oct27001451043
97864467674
103087421987
111344850921
12721b7a657
133a2842c20
14214081add
151310b1a77
hexb8065223

3087421987 has 8 divisors (see below), whose sum is σ = 3327246720. Its totient is φ = 2847930240.

The previous prime is 3087421933. The next prime is 3087421993. The reversal of 3087421987 is 7891247803.

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 3087421987 - 211 = 3087419939 is a prime.

It is a super-2 number, since 2×30874219872 = 19064349051622056338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3087421987.

It is not an unprimeable number, because it can be changed into a prime (3087421907) 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, 63814 + ... + 101227.

It is an arithmetic number, because the mean of its divisors is an integer number (415905840).

Almost surely, 23087421987 is an apocalyptic number.

3087421987 is a deficient number, since it is larger than the sum of its proper divisors (239824733).

3087421987 is a wasteful number, since it uses less digits than its factorization.

3087421987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166493.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 3087421987 is about 55564.5749286360. The cubic root of 3087421987 is about 1456.1250199261.

The spelling of 3087421987 in words is "three billion, eighty-seven million, four hundred twenty-one thousand, nine hundred eighty-seven".

Divisors: 1 13 1439 18707 165041 2145533 237493999 3087421987