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2890108081 = 74161165083
BaseRepresentation
bin1010110001000011…
…1000110010110001
321110102020200222001
42230100320302301
521404331424311
61154441014001
7131422341040
oct25420706261
97412220861
102890108081
111253432a83
12687a84301
133709b9433
141d5b9c557
1511dad84c1
hexac438cb1

2890108081 has 16 divisors (see below), whose sum is σ = 3439029888. Its totient is φ = 2377180800.

The previous prime is 2890108063. The next prime is 2890108087. The reversal of 2890108081 is 1808010982.

It is a cyclic number.

It is not a de Polignac number, because 2890108081 - 25 = 2890108049 is a prime.

It is a super-2 number, since 2×28901080812 = 16705449439723005122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2890108081.

It is not an unprimeable number, because it can be changed into a prime (2890108087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65035 + ... + 100048.

It is an arithmetic number, because the mean of its divisors is an integer number (214939368).

Almost surely, 22890108081 is an apocalyptic number.

It is an amenable number.

2890108081 is a deficient number, since it is larger than the sum of its proper divisors (548921807).

2890108081 is a wasteful number, since it uses less digits than its factorization.

2890108081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165192.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 2890108081 is about 53759.7254550281. The cubic root of 2890108081 is about 1424.4198859168.

The spelling of 2890108081 in words is "two billion, eight hundred ninety million, one hundred eight thousand, eighty-one".

Divisors: 1 7 41 61 287 427 2501 17507 165083 1155581 6768403 10070063 47378821 70490441 412872583 2890108081