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2872907889 = 31496427087
BaseRepresentation
bin1010101100111101…
…0001100001110001
321102012212211201220
42223033101201301
521340431023024
61153024215253
7131123212515
oct25317214161
97365784656
102872907889
111244755245
1268216a529
1336a2764c7
141d37a2145
1511c33be79
hexab3d1871

2872907889 has 8 divisors (see below), whose sum is σ = 3856252800. Its totient is φ = 1902417456.

The previous prime is 2872907887. The next prime is 2872907893. The reversal of 2872907889 is 9887092782.

2872907889 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2872907889 - 21 = 2872907887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2872907887) 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, 3213097 + ... + 3213990.

It is an arithmetic number, because the mean of its divisors is an integer number (482031600).

Almost surely, 22872907889 is an apocalyptic number.

It is an amenable number.

2872907889 is a deficient number, since it is larger than the sum of its proper divisors (983344911).

2872907889 is a wasteful number, since it uses less digits than its factorization.

2872907889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6427239.

The product of its (nonzero) digits is 8128512, while the sum is 60.

The square root of 2872907889 is about 53599.5138877210. The cubic root of 2872907889 is about 1421.5884969315.

The spelling of 2872907889 in words is "two billion, eight hundred seventy-two million, nine hundred seven thousand, eight hundred eighty-nine".

Divisors: 1 3 149 447 6427087 19281261 957635963 2872907889