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2989974805 = 519149211231
BaseRepresentation
bin1011001000110111…
…0110010100010101
321201101011110100121
42302031312110111
522110413143210
61212405311541
7134044236466
oct26215662425
97641143317
102989974805
1112a4843364
126b54055b1
133885b437c
14205156d6d
151277636da
hexb2376515

2989974805 has 16 divisors (see below), whose sum is σ = 3802176000. Its totient is φ = 2250866880.

The previous prime is 2989974797. The next prime is 2989974817. The reversal of 2989974805 is 5084799892.

2989974805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2989974805 - 23 = 2989974797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91461 + ... + 119770.

It is an arithmetic number, because the mean of its divisors is an integer number (237636000).

Almost surely, 22989974805 is an apocalyptic number.

It is an amenable number.

2989974805 is a deficient number, since it is larger than the sum of its proper divisors (812201195).

2989974805 is a wasteful number, since it uses less digits than its factorization.

2989974805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211404.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The square root of 2989974805 is about 54680.6620753626. The cubic root of 2989974805 is about 1440.6412404190.

The spelling of 2989974805 in words is "two billion, nine hundred eighty-nine million, nine hundred seventy-four thousand, eight hundred five".

Divisors: 1 5 19 95 149 745 2831 14155 211231 1056155 4013389 20066945 31473419 157367095 597994961 2989974805